nzephier wrote...
the best answer (there is no scientific answer that is totally accurate) is that it is an instinct to go after what u sexually prefer. which is why some people who are gay are born gay. they from birth had an instinct to go after their same sex, but people who are straight go after, of course, the opposite sex.
WHAT?!?!?! NO WAI!!!! U TOTALY CHUSE TO BE GAY!!!
[/ignorant person impersonation]
That's the hormonal theory. There's also one that could be chalked up to that crazy Freud, where you have an instinctive urge to return to the womb.