You're not a utilitarian, though. Presumably most cryonics patients are not utilitarians - at least they spend more money freezing themselves than others - which seems like a pretty reliable indication of egoism to me.

A utilitarian analysis might be relevant to the government if deciding whether to fund or ban cryonics, I suppose. It is pretty hard to imagine government funded cryonics at the moment. Not very many are going to vote for that.