A question, not a flame - Cure for transsexuality?

[ardynm.livejournal.com]

This is a what if question. I just want to know what people think about it. I'm not promoting the question's outcome, either way.

What if, some time in the near future, Doctors found the reason behind the differential brain bath / body bath of testosterone/estrogen, and found a way to stop it from happening?

Basically, what if doctors found a way to stop transsexuality happening in-vitroutero?

Given no other information, (other effects on the baby, the safety of the procedure, the percentage outcome, etc) How would you feel?