Gender is an identity. Straight/gay, those are "sexualities".
Testosterone is a funny thing. Prisons are full of men.
I, personally, am very proud of who I was, as a straight male. I was not particularly "masculine", or lets say, I do not have many neadrathal characteristics. BUT as a male in society, I am recogonized. AND I don't/didn't have the ability to be a complete AH.