If you hold index funds, you have already spent years betting your future on an asset that beats inflation by sitting still. That is the entire premise. You buy VTSAX or VOO, you leave it alone, and over any long horizon it outruns the dollar. The whole point of the position is that it appreciates faster than the money you earn and the money you spend.

Which makes the standard argument against deflationary money a little awkward for the index investor to hold, because that argument says this exact setup is impossible.

The fear goes like this: if money gains value simply by being held, no one will spend it. Purchases get deferred, demand collapses, and the economy grinds into a spiral where everyone waits and hoards and starves the commerce that pays their wages. It is the standard case against Bitcoin as money, and against deflation as a monetary condition generally.

The problem with the argument is that the FIRE movement is a live, decade-long experiment running against it — and the experiment keeps returning the wrong answer.

You built your life around holding the inflation-beating asset

The math of financial independence is the math of holding an appreciating store of value and refusing to let it decay. You save 25 times your annual expenses, you park it in broad equities, and you plan to withdraw something like 4% a year, forever, off an asset that historically compounds around 10% nominal and roughly 6.5–7% after inflation. Around 60% of American households own stock in some form; the FIRE crowd just does it with intent and a spreadsheet.

If the hoarding logic were correct — if the mere availability of an appreciating asset caused people to defer consumption indefinitely — then the index investor is the person who should have frozen first. You, specifically, hold the better-than-inflation asset. You understand compounding better than anyone at the checkout counter. By the spiral argument, you should be the last person on earth who ever spends a dollar.

Instead, the defining goal of the entire movement is to spend it. The number was never the point. The point was to hit the number and then pull the withdrawal — to fund a life, buy back your time, and stop trading hours for dollars. Nobody in FIRE is accumulating in order to hoard to zero. They accumulate in order to decumulate. That is deflationary money working exactly as designed: hold the appreciating thing, then spend from it deliberately, for the rest of your life.

The real failure mode is the opposite of a spiral

Here is the part that should end the argument. Among index investors, the documented, widely discussed failure mode is not that people refuse to spend. It is that they refuse to spend enough.

There is an entire sub-genre of personal finance — Die With Zero is the best-known version — built around the problem of people who accumulated an appreciating asset, kept their withdrawal rate too conservative, and died with most of it unspent. “One more year syndrome” has a name because so many people hit their number and keep working anyway. The community treats all of this as a pathology to be corrected, not a triumph to be celebrated.

Sit with that. If appreciating money genuinely caused a rational spiral into permanent non-spending, then dying with millions unspent would be the optimal outcome, and the community would be coaching people toward it. Instead, everyone agrees it is a mistake. The “deflationary spiral,” when you actually go looking for it in the wild, is not a depression. It is a handful of over-savers, and a shelf of books telling them to knock it off and go enjoy their lives.

And note what even those over-savers did: they consumed all the way through their working years. They bought the food and the housing and the healthcare. They just over-optimized the discretionary margin. The economy did not freeze around them. They left money on the table and called it a personal finance problem.

The tell: it moves with the money supply

There is a further piece of evidence that turns “an asset people save in” into “an asset people use as money,” and it shows up when you hold the S&P up against the money supply itself. If the index were priced purely on the earnings underneath it, you’d expect it to track profits and output. Its tightest macro relationship, though, is with M2 — the raw quantity of money in the system.

I want to state this carefully, because the popular version overreaches. The overlay charts of M2 and the S&P look almost too clean, two lines climbing together for decades — but any two series that both trend upward for forty years will correlate at the level almost by construction. On a year-over-year basis the link is actually loose: the correlation between annual M2 growth and annual S&P returns runs around 0.15, close to statistical noise. The index is not simply M2 with extra steps, and I won’t pretend it is.

Both climb together over the long run — but indexed to 2010, the S&P (+368%) has far outrun M2 (+145%). That gap is the real-return component sitting on top of the monetary one, and it’s why the naive “the market is just M2” chart oversells the case. Data: Federal Reserve (M2SL), S&P 500 year-end closes.

What matters is when the relationship tightens — precisely during floods of new money, exactly as a monetary-sink story predicts. From February 2020 to April 2022, M2 went from about $15.4 trillion to $21.8 trillion, a 41% increase in just over two years and the largest expansion in the modern series. Over the same window the S&P climbed from its pre-pandemic high near 3,380 to roughly 4,800. Each grew by roughly 41–42% over the same window. The new dollars did not sit in checking accounts waiting to be spent. They went looking for somewhere to be stored, and a very large share of them were stored in equities.

Different paths, same destination: M2 climbed steadily while the S&P crashed and then surged, but both peaked roughly 42% above their February 2020 starting point, about a quarter apart. Data: Federal Reserve (M2SL), S&P 500 index levels.

Analysts even have a gauge for this: the S&P-to-M2 ratio, which divides the index by the money stock to ask how much of its rise is real rather than monetary. That the ratio exists and gets watched at all is a quiet concession — that a serious share of equity “value” is understood to be a monetary phenomenon, not an earnings one. The honest caveat is that the ratio currently sits near the highest it has ever been, a level exceeded only around 1929 and 2000, which means stocks have lately outrun even the fast-growing money supply; the index is not a pure mirror of M2. But a pure mirror was never the claim. The claim is that the S&P is where dollars go to stop being dollars — and a price that swells with the money supply, most visibly every time the supply is flooded, is exactly what being used as money looks like.

The S&P priced in money: the index divided by M2 has climbed to around 0.27, near the top of its recorded history. Sources: NelsonCorp, Eco3min.

Data and further reading: money supply from the Federal Reserve’s M2SL series via FRED; the weak year-over-year correlation documented by StocksBNB; the stock-to-money ratio from NelsonCorp and Eco3min; and a live correlation tracker at MetricsMonster.

“But index funds aren’t money”

The fair objection is that stocks are not money. They are volatile, they are not a unit of account, and you cannot hand someone a share of VTSAX at the register. All true — which is why the honest word is pseudo-money. But watch what that concession actually buys the other side, and what it doesn’t.

It does not buy the hoarding argument. Liquidity stopped being the barrier a long time ago: you can sell an index position in seconds and have cash the same day, and plenty of people borrow against a portfolio rather than sell at all. FIRE investors live this every year — sequence-of-returns risk is a core anxiety precisely because you are spending from the appreciating asset, methodically, through good markets and bad. The friction between “asset that beats inflation” and “money I spend this month” has collapsed to almost nothing, and spending did not collapse with it.

What the volatility objection really says is narrower: index funds are not a stable deflationary money. Fine. So look at one.

The deflation you already live with, happily

We already have goods whose prices fall, predictably, year after year, while quality rises: consumer electronics. A flat-screen TV that cost a few thousand dollars two decades ago costs a couple hundred today and is far better. Computing power and storage per dollar have fallen by orders of magnitude. Everyone knows that waiting a year gets you more for less.

By the spiral logic, no one should ever buy a laptop — the rational move is to wait forever for the cheaper, better model that is always coming. Instead it is one of the highest-volume consumer categories on earth. People buy the phone now, knowing next year’s is better and cheaper, because they want the phone now. That is deflation in the good, with a guaranteed reward for patience, and consumption in that sector is enormous. The core empirical claim of the anti-deflation argument — that people refuse to buy things that get cheaper and better over time — is simply false, and we can watch it be false every product cycle.

Why the spiral never comes: time preference is real

The reason isn’t complicated, and FIRE people understand it better than most. Human time preference is positive and it does not go to zero. People want things now. You cannot defer rent, and you cannot defer food. You cannot defer the medical bill, the birthday, or the years your kids are young enough to want you around. The entire reason to retire early is to stop deferring — to buy time and experiences now rather than trade them away for a paycheck you were only ever going to convert into a life anyway.

A deflationary money does not abolish any of that. It changes exactly one number: the hurdle a purchase has to clear before you’d rather hold the money instead. Raise that hurdle and the frivolous, impulsive, debt-financed tail of consumption gets trimmed — which, to a FIRE audience, is not a bug, it is the whole ethos. Necessary spending, time-sensitive spending, and simply wanting things while you are alive to enjoy them all survive it completely. That is the overwhelming majority of what the economy is.

What actually changes — and what doesn’t

I want to follow this all the way down, because the honest answer is not “nothing changes.” A deflationary money would raise the savings rate, because cash would stop being a melting ice cube and holding it would no longer be punished. It would make debt-financed consumption more expensive in real terms, since you’d repay in money worth more than you borrowed. It would reward patience instead of taxing it.

Read that list again. It is the FIRE mindset, imposed by default on everyone instead of adopted voluntarily by a disciplined few. A deflationary money doesn’t invent hoarding — index investors already hold trillions in appreciating assets and the checkout lines are still full. It just merges the savings vehicle and the spending account into one thing, so nobody has to shuttle between the depreciating money they transact in and the appreciating asset they actually want to hold.

And we already know how that story ends, because we can watch the FIRE community live it. Not a frozen wasteland. People holding the appreciating thing, hitting their number, and spending it down on a life — with a whole genre of books reminding them not to be so cautious that they die with it unspent.

Who actually gets to save?

I said a deflationary money imposes the saver’s discipline on everyone. That word — everyone — is the part of this I care about most, because today saving is not available to everyone. This is where the argument stops being monetary theory and becomes a question of who gets left behind.

Right now the escape hatch from inflation runs through the stock market, and that door only opens for the roughly 60% of households who own equities. You need income beyond your bills, a brokerage account, and enough financial confidence to use it. The other 40% are left holding the depreciating dollar because it is the only money they have. Inflation is a tax, and we have quietly built a system where the people best equipped to dodge it do, and the people least equipped to dodge it can’t. The FIRE playbook is real and it works — but it is a playbook for people who already have surplus, access, and know-how.

A base money that holds its value asks for none of that: no minimum balance, no account to open, no permission. Everyone who holds it is saving by default — whether or not they ever buy a single share of anything.

That is the whole moral weight of the idea. A money that simply does not lose value hands the same protection the index investor buys to the person living paycheck to paycheck — in the currency they already earn, with nothing to opt into and no one’s approval to wait on. Saving stops being a privilege you buy your way into and becomes the default condition of holding money at all. The 60% who found the exit did nothing wrong. The point is that the exit should not have been theirs alone.

Which money?

Everything above has said “a deflationary money” without naming one, so let me name it. Bitcoin is the candidate that actually holds these properties. Its supply is fixed at 21 million coins — there is no issuer who can print more and dilute what you own, which is the entire mechanism behind the melting ice cube in the first place. And it delivers the access point that stocks structurally cannot. There is no brokerage to open, no bank to approve you, no minimum balance, no accreditation, no income test. A phone and an internet connection are the whole prerequisite. That is what closes the 40% gap: a deflationary savings asset with no gatekeeper standing in front of it.

I won’t oversell where it is today. Bitcoin is still volatile, still early, still monetizing — right now its price is driven far more by speculation and sentiment than by the placid stability the argument above assumes. The stable, everyone-holds-it savings money is the destination, not the current state. The volatility is what a monetary asset looks like while the world is still deciding how much of its savings to entrust to it, and it compresses as that premium fills in. But the two properties that carry the whole argument — no debasement, and no gatekeeper — are already true, today, for anyone who wants them.

So put the pieces together. The deflation objection was never really an argument against Bitcoin. It was a description of a world where money holds its value and saving finally works for everyone — followed by a prediction that this world would freeze solid. The prediction is the only weak part, and it fails for a plain reason: it requires people to behave in a way that people, and index investors most of all, demonstrably do not behave, even when handed every incentive to. We already hold the appreciating thing. We already spend, and save, and live around it. Bitcoin doesn’t change that behavior. It changes who is allowed to have it.