I would have asked what planet you are from, but I'll take a shot in the dark and guess that you're from Canada right? They've had equal rights for awhile now.
They don't admit it for the same reasons that the Mathew Shepard, Tyler Clementi, and other people who were either killed or bullied to the point of commiting suicide are no longer with us.
It is because people, have a strong hatred of gays to the point where they lose their humanity.
They stay in the closet for the same reason fair skinned Blacks relaxed their hair to pass the "Pencil Test" (where a pencil was placed in their hair an if it fell out then they would be considered White) and lightened their skin so that they could pass for White in the 50's, and that is because if discovered, they'd be treated like shit, or worse, killed.
It has gotten better, for at least the Gays though. I have never heard of a Gay person being tied to a tree and set on fire by homophobes, like Blacks have been by Whites, and I have never heard of a Gay person being tied to the back of a truck and then dragged for miles to his death, like there has been with Black man and 3 racist White men. That actually happened a few years ago.
I think when you have heard the stories about the Gays being bullied, beaten, and killed for no other reason than the fact that they are Gay, that is STILL going on especially, in this country, then you'll come to understand exactly why they either stay in the closet or pretend to be straight.
Unlike with Gays, a person's family won't turn on a Black person simply because they are Black, but if they are gay, then they risk being tormented by their own family, as well as the homophobic assholes in today's society.
And the Gay Community having support is only recent as they've decided to band together in solidarity because they have not only been abused and abandoned by their friends and families, but they have been treated this way by society as well. It is kind of like being apart of a group of people who weren't chosen to be on a team for dodgeball or soccer, at first you feel bad because you weren't chosen, but when you see that there is a team of others like you, who accept you for who you are, and know how you feel, because they've been there, then you feel better because you know that you have a support system.
If the support system didn't have as strong a voice as it did because of celebrities, gay or not, and other people who had the courage to come out and be proud of who they are, then rest assured there'd be a lot more closeted people. Just because there seems to be a strong support of the Gay community, doesn't mean that a Gay person is completely safe to be who they are.
As fucked up as Americans can be on this subject, it could be a lot worse. In the Caribbean, in countries like Jamaica, they are very hateful of Gays to the point that some men have been killed and some women have been raped by men who feel that they can cure them of their "sickness" and don't even get me started on the Middle East.
