To the TS, wouldn't you reasonably agree that if you are born a man, but feel that you are in fact a woman trapped in a man's body, that you have a mental disorder?

Would you agree that if a person was born a man, but felt he was in fact a kangaroo trapped inside a man's body, and commenced to hopping around, that he had a mental disorder?

Regardless of emotions, being born one thing, but believing you are the opposite of what you actually and realistically are, has to be considered a mental disorder...and should be treated as such.