OK, you think, maybe there's a way to do this and still be a good person and not go to hell. Aren't there men who would like to be women, or who would be happier as women? And even if they themselves wouldn't want to be women, aren't there brutal men who might be nicer, or at least less able to do damage, if they were women? Rapists would be far less likely to rape if they were turned into women! And if the change goes all the way down to the chromosomes, it could cure some sex-linked conditions such as hemophilia. Can't these powers be used for good? You're not a fallen angel, there's no reason for you to think of yourself as part of Team Evil! Why not have fun and make the world a better place at the same time?