Confusing Fantasies

I have fantasies that I don't actually think are attractive. My "real" sexuality and sexual expression is fairly restricted, because I'm not actually attracted to many of the things I fantasize about.

Some of these fantasies (lesbianism, threesomes, anal) are things I find attractive in theory but just can't bring myself to actualize, while some (pedophilia, bestiality, rape) are the result of the wrong topic crossing my mind once I'm already thinking about sex.