Straight guy here, late 20s. I've never found vanilla sex that interesting, I have a very strong sadistic fetish and attraction to women's stomachs. Women don't usually turn me on unless they are in peril, though certain types of outfits can help, for example a fit girl in a tight belly shirt can turn me on pretty easily simply due to the fantasies she stirs in my mind. I've never told any of the girls I've slept with that I am usually imagining gutting them alive while I fuck them, but hey it's the only way I can really get off so whatever. I'd never hurt anyone for real anyways, though it does suck having basically my only source of true arousal be something I find morally repugnant (when done for real).