When you have an environment that is averse to simple gratification and on top of that demonizes it as well, you got some fucked up people. Weird there are societies that put every sexual act into negative connotations and yet don't mind butchering people in movies or in person.
I remember Sam Peckinpah's "Wild Bunch" got an R rating. Midnight Cowboy was rated X for sexual content, including homsexuality. Considering that more real content and meaning was in the X rated flick, and made an actual comment on society, was just not allowable.