When you retire and start drawing from your savings, who decides how much of it you actually keep?
For most Americans the honest answer is Congress.
Every dollar sitting inside a traditional 401k or IRA has never been taxed. It went in before the government took its share and it has been growing in that pre-tax state ever since. The account looks like yours. Legally it is. But a portion of every withdrawal you make in retirement will be determined by tax rates that exist at that moment in time, rates set by legislators responding to budget pressures you have no control over.
Right now the United States government faces an estimated $75 trillion in Medicare and Social Security obligations it cannot cover with current tax revenue. That gap has to close somehow. The most likely mechanisms are spending cuts, borrowing or higher taxes. All three are in active political discussion. None of them are fully in your control.
The households whose retirement income depends entirely on tax-deferred accounts are the ones most exposed to however that gap gets closed. Not because they did anything wrong. Because nobody told them they were making a decision about tax risk when they signed up for their 401k.
We are currently in a low tax environment. That window will not stay open indefinitely. Whether your retirement is structured to take advantage of it is exactly the kind of question a Financial Awareness conversation is designed to answer.