I don't believe people "need" to put everything in "black" or "white" categories. I think it is an "us" vs. "them" psychology/mentality going on with these judgemental people. Some people, for whatever reason are so tribal (and I don't mean tribal in the good sense of the word). If you aren't one of them, you are the "outsider". And the outsider must be isolated, out side, away, wrong, evil, bad ... the list goes on and on.
I would almost swear there was a bigger psychology thing going on here. And then I think about it, and I realize. They arent any different than the people (hets) that once and still denigrate them. The only difference is that they sleep with same sex partners. (so Zahn, are you telling us they are only being human?)
And what can label a group or person as an "outsider" can range anywhere from the color of the skin, to the clothes they wear and beyond. Here's the thing though.. you cant fit people into black and white categories like a square peg in a square hole. We are not built that way and far too many people believe that we are.
The catholics did it to the jews and the baptists (and everyone else too), the anglos did it to everyone who wasnt anglo, the american indian did it tribe against tribe. It is a human condition sadly. There will always be the "us vs them" kind. I do belive we are coming up on a wide sociological change though. I hope it takes a positive turn and we humans dont screw it up as usual again.
That said, there are too many people in this world with thier collective noses way too far up other people's asses. If you know what I mean.
A lesbian said this to me once:
"I detest the whole damned idea of bisexuality. I cant understand them or empathize with it and it is confusing to me. These people are untrustworthy. You can't date or be friends because there are no boundaries of sexuality to them."
I was stunned to say the least. I think I remember hearing something very similar to that coming from heteros and directed at the gay/lesbian people not so very long ago. These people are only repeating what was once done to them. The most horrible thing about people like this, is that they actually JUSTIFY it in their own heads!