Both involve a relatively low fixed cost in exchange for a return that is extremely valuable but has very low probability. I assume most people here don't accept the Pascal's Mugging argument, so I'm curious why cryogenics seems to have much more buy-in.
To elaborate on this, the odds of cryonics succeeding are estimated to be between .23% in the pessimistic scenario and 15% in the optimistic. Contrast this with the 1 in quadrillion (or a similarly high number) chance of the mugger being honest in Pascal's mugging.