i was going to reply this morning, but i ran out of time with all the good points. More have been added since then.
by and large, for most of my stories, i write what appears in my head. i do not censor. if i write something which i know will not conform to the rules of GA, i take it elsewhere. there are site where anything, and i do mean anything, goes. if i need a demon to do something absolutely horrifying, or if a character of mine displays a particular graphic violence, i still write and i still post.
Mostly, I agree with Kitt. if we fail to talk about the bad crap that happens, that doesn't actually mean it's not there. as for the acceptance thing, surely all i as an author am going is showing, along with so many others, that we are not stereotypes, and the horrible-awful that exists within straight culture also exists within ours. some people are evil, it has very little to do with their sexual orientation.