So they are going to grow all of these perfect, super smart, super rational, mental illness free babies in test tubes.
Oh boy, are they ever in for a surprise.
What do you think is going to happen in 20 years when a critical mass of intelligent, smart, rational adults emerge and take apart the the mess of the financial system, the health care system, the governance system, the production system. And they will fix it in a single night of long knives.
It'll be a bloodbath.
(and there isn't going to be any of this changing boys into girls because they are going to know it isn't feasible)