Thanks for the study. If I ever have to do research for school again, I'll come back to this. (I'm a medical freak, forensic too.)
Repeating "we are animals" "are not" "are too" is how children argue. Are children even allowed in the GLBT Lounge? Or any other relationship threads?
Aside from the bisexuality factor, which BTW was a great point for the "choice" side, hetero vs homo is not a choice. Rebuttal: bisexuality does have differing ratios (50/50, 60/40, 70/30, etc.), those ratios are genetically set and resistant to change, at least on the physical level. Emotionally, I don't really think orientation affects that too much.
Of course, those who say it was a choice to be hetero/homo may just mean that they either choose to accept their inane orientation, or try to resist themselves from it. I chose to accept myself.