I think many people would prefer to be in a body that Doesn't Age/Die Without Permission, and then figure out how to handle the problems later. I'm not saying that's a _wise_ choice, and it could certainly have issues for wealth accumulation, but staving off a certain thing (death) in exchange for nebulous maybe-bad-things (hypothetical future problems) is something that humans seem to be notoriously bad about reasoning about.

Hell, I type this, and I fall for it too: I'd much rather be able to live forever, without fear of Alzheimer's or a failing body. I have no idea how I'd pay for that, but I'd be a liar if I said I didn't want to Not Die.