For arguments sake - What about the people born with 2 organs and the parents have to decide at birth which organ should go. And years later they realize they made a mistake ?
"What about the people born with 2 organs..."
People who are born truly physically sexually ambiguous are rare in the extreme. I looked into research reports on that, once (many hours getting through the huge amounts of homosexual/transexual advocacy junk science), and found that the number was something like one in 65,000.