I might be wrong in this, but sometimes I get the impression that Junction Guy hasn't met many gay people, and that he might have a had a bad experience with the ones he has. It's just a hunch...
Lifestyle - wrong choice of word I'd say, but understand where you're coming from.
I'm in a monogomous relationship with a man. Our life looks a lot like the lives of other couples we're friends with friends, gay and straight. I have friends who have promiscuous sex, gay and straight. I have friends who are into fetishistic sex, gay and straight. Gay people aren't the 'other', they're the pretty much the same as you - dull/funny/freakish/ordinary/religious/agnostic etc. etc.