Good old nature nurture!
I think some people will be born gay right through to some people turning gay due to the life experiences they encounter. I have a friend who is a Male cheerleader thoroughly camp and so on - I can't believe that his 'campness' is purely down to the environment he grew up in but there must be some genetic forces there to.
I agree with the
kinsey scale which states that everyone's sexuality falls on a continuum with some people being exclusively hetrosexual others being exclusively homosexual and everyone else falling in the middle. There are so many different variations to sexuality and whilst a little kid saying I am gay is unlikely said little kid is just as likely to go I am straight!
I mean when we are young gender means nothing to us as we get a little bit older we begin to hate the opposite sex - how often do little kids say boys are yucky and smell or girls are horrible and icky - this seems pretty universal and no one is telling us to act like this but we do. Then suddenly the opposite sex turn into creatures who we fancy and 'omg I am like talking to a boy *swoon*'! Has anyone seen the film Little Manhattan it sprung to mind as I typed it up.
Slightly side swiping now to 'transexuals' and so on but
Money experimented as shown in the link and realiesed that gender is not easy to change. This followed on by researchers realising that there was a specific part of the brain in the hypothalmus (the
SDN) that was twice the size in a males brain than in the female brain. Male Transexuals had the female SDN and thus nature played a critical role in it.
End sideswipe!
This has been found when looking at gender so it isnt that far removed from there being a difference in the brains/genes of male and female gay or straight that hasnt been discovered yet.
Lastly I have known gay animals so how do the 'learn' to be gay?