The fact that transgender only exist in the first world country speak for itself, lol. Heck, isnt transgender only start recently? I never saw any news or article in the 1800s or even 1900s. What do you think of that?
Its not that it doesnt happen yet. It wont happen to my family.
Also down syndrome can be cured with therapy. Abviously you have to cure it from a certain age. When he/she get old enough, it cant be cured. How do I know? One of my friend did heal, he had one since birth, cant walk, only speak "ao.. ao.. " sounds. It took like 2 years of therapy to cure it.