With a few exceptions, why does cryonics continue to repel female early adopters? I draw the contrast with Mormonism, which drew a lot of female early adopters despite sanctions against their participation in it. One, they had to defy taboos about getting involved in weird, heretical new religions; and two, they especially had to defy taboos against polygyny and adultery. Yet their participation turned Mormonism into a demographically successful church. If Mormonism had attracted mostly men, its demographic breakthrough wouldn't have happened.