I hate how everybody bends or to be PC and placate these people. If you were born with a penis, YOU ARE A MALE!!!! I don't care if you cut it off, get breast implants and change your name to a girls name. It should be illegal for these people to claim any other sex than what they were born with. Shouldn't be legal on paper work, and it should be legal to "trick" employeers and others about what sex a person really is.
The only exception I can see is for hermaphrodites, they're born with both sexes, so I can see them choosing one to identify themselves. And most of them do have surgery to remove one sex or the other, like Jamie Lee Curtis's parents who had her penis cut off as an infant, so that choice shouldn't be to hard at that point.