That's because the gay scene is nearly completely geared towards sexual behaviour. I think many young gay people start to think that this is the way they fit in, because the scene is their only outlet for meeting other gay people.
It is totally like that where I live. I know it is not right, but I still can't help to think that is the only way I will meet other gay people. Thankfully I have be able to control myself for the most part and have only had one **** **** up.
I do regret remaining in the closet for so long, because most of my close friends that I now have did manage to have at-least one successful relationship, but like you said, it seems like most gays start being slutty to fit in.
Anyhow... Single and have the gay here.