This homosexuality's got to be a genetic disorder -- I've yet to discover a straight guy DEMANDING to get married.
You don't see straight men DEMANDING to get married because nobody DENIES them the right to do so.
You may find this informative:
How Might Homosexuality Develop? Putting the Pieces TogetherThousands have left the homosexual lifestyle.
Dr. Spitzer used to believe homosexuals couldn't leave the lifestyle, but after his own study he now believes they can. That must have been one very revealing study for Spitzer to change his mind on such a hot controversial issue. Source
Also: Homosexuality and Genetics.