i always was under the impression that gays choose this way of life. however, about 10 years ago, i had to take my daughter to an indocrinologist (sp?) and we got on the subject. he notified me all fetuses have both estrogen and testosterone. one eventually overcomes the other and the sex is determined. however, in some cases, one of the harmones doesn't complete the job. you've seen these people.
anyway, now i believe that some make the choice while others ARE actually born that way.
i have no opinion on gay rights. that being said, i don't fear gay people at all.