Damn right. There's no mystery about it. When the paychecks stop your whole attitude about accumulated wealth changes with it. And then there's the current inflation factor. Here in the US basically anything tied to home ownership is not going up at 2-3% per year like the Fed discusses, 10% per year is probably on the low side. My homeowners insurance has gone up 30% per year for the last three years, compounded. Home values keep going up, so property taxes keep going up. Cars keep getting more expensive, and their insurance is on a steep upward price slope too. Replacement appliance prices are nutty; parts are worse. When our hot water heater needed replacement it was over $3500. I thought the company I contacted was crazy, until I called around and found that's the ballpark for a model like we needed. Home ownership in retirement can change your whole attitude about how wealthy you think you are.
Of course, the only thing worse than owning a home is not owning one.
Most of us boomers grew up when one million dollars was a lot of money, so anything approaching that (or even a low multiple) might make you initially think you're rich. And then the facts of the previous paragraph set in, and you get a huge reality pill to swallow. Interest and gains aren't the only things that compound, inflation does too. Since most paychecks go up (sort of) with inflation, that insulates you a bit. Like I said, when the paychecks stop the reality starts.
There are also other factors. When your income is mostly derived from wages, and you pay income taxes via automatic withholding, it insulates you in a way from the reality of the process. When much of your income is from interest, dividends, and asset sales, a lot of retired people get a rude introduction to quarterly estimated tax payments to the IRS and most states. Suddenly income taxes look more like a new expense than just paycheck reducers. I know, its just a perception thing, but logging into the IRS website and telling them, yeah, take that big nick out of my checking account, you get a new view of the real cost of living.
So, at the end of your first year of actual retirement it's not unusual to start thinking your wealth looks more ephemeral than you thought it was while you were working, and you start thinking frugality is the best strategy. I don't think it's hilarious at all. I'm like that. Twenty years, a very average retirement duration, is a long time to bet on investments. Some people I know chicken out and are buying annuities or letting "advisors" manage their wealth. Retirement can be scary to a lot of people. Sometimes at 2:00am after the equity markets correct for the fourth day in row, me included.