Ya know, I gotta say, having gotten to the point where we can predict future sexuality in small children with extremely high accuracy based on the findings of these studies, I really think it's a closed case.
While it's true we may not understand all of the mechanisms at work here, it's not true that it's still up for debate. There is no evidence that it's chosen, and tons of evidence that it's not. We can even predict it based on physical characteristics. C'mon.
I agree that it doesn't really matter to the debate of whether or not they deserve equal rights. I don't know why I get caught up in it. The ignorance bugs me.