Yet, when we have people who want to mutilate themselves to "change their sex," we don't treat that as a mental disorder. Instead, we take it seriously. So seriously in fact, we have 9 year olds getting hormone treatments so they can pretend to be another gender.
If a client went to a doctor and said he thought he was a cow, we wouldn't send him to a surgeon to get horns and udders attached. Yet, you can no more change your sex than you can change into a cow. Even if you have a "sex change," your sex hasn't actually changed. A man who mutilates himself to look like a woman, still isn't female. He can't have a child. Very few men are going to knowingly date a man who's surgically mutilated himself to look like a woman. This is a terrible, horrible thing we're doing as a society to these mentally ill people. Instead of getting them the mental help they need, we're catering to their pathology. It's cruel, it's wrong, and a more compassionate society wouldn't wallow so deeply in political correctness that we'd allow people to do this to themselves.