As someone without 250k in the bank (or generally), FDIC insurance is quite reassuring. Banks pay into it like any other insurance, so it would take a huge money-doesn't-matter-anymore shock to overwhelm it. 2008 was pretty close! Crypto wouldn't do any good for me since the utility bills for all the internet infrastructure are paid for with real money (in the "most people exchange it for goods and services" sense).

There'd be nowhere to go where even a paper wallet would do me any good. You could execute a 51% attack on a solar-powered NetBSD toaster.