most of the objections people raise to cryonics seem to be off enough that, even if those objections were solved, those particular people still wouldn't sign up - that is, they feel some fundamental antipathy to the whole idea of cryonics, and unconsciously pick some rationalization that happens to sound reasonable to them to explain it.

I really would sign up for cryonics if I thought it was at all likely to work. Even at a 1 in 30 chance I'd take it. But there are so many ways for it to fail that I just don't think the odds are good at all.