The propensity to paint the middle with the extreme is an unfortunate fact of social and political discourse these days.
I don't buy it.
To suggest that gays (all gays?) are "without doubt the most promiscuous amoral group of people around today" is the same as suggesting the Eric Robert Rudolph is the one true voice of the pro-life movement. It's just silly, BP.
BTW, your post could be read as someone "coming out". You are suggesting that you know the things you say are true, as they "do not hesitate to make it known to one another", followed by "Course you wouldn't know that, being a straight guy, would you now."
I'm proud of you, it's very bold what you have done. I didn't realize that you were speaking from your own personal experience (not that there's anything wrong with that). Self-loathing, though, is not at all a healthy thing.