I have three male childhood friends who went through surgery to change their gender. In high school, they took estrogen and other pills to help them develop more female characteristics.

Like Kath said, you can't understand why they'd do something like that, but you also can't explain why you prefer men and why YOU act like a girl. None of us can really explain why we act and think the way we do. We were just born that way.

My former male friends always knew from childhood that they were female. They were miserable because they were born in a man's body--and received harsh treatment from others because they couldn't fathom the idea of Gender Identity Disorder.