So true.
A woman who decides to be a man will never have all the appropriate, um, equipment. Her boobs will sag, no matter what. She will never have to worry about prostate cancer...breast cancer, maybe, t'other, no.
A man who wants to be a woman will never be female. At best, he will be a GELDING.
Note that there are a very few individuals that are XXY or XYX.