True. But there are some “low hanging fruits” e.g. if not outright eradicating then at least significantly reducing the prevalence of congenital diseases.
Of course giving the government the right to prevent some individuals from having children is an extremely slippery slope. States that are willing and capable of engaging in such things e.g. ( Communist China back in the 70s ) also tend to be run by extremely misguided and delusional people.
We already test for things like Downs Syndrome which doesn't mean that we stop pregnancy but it tells the parents what to expect.
Since we can do gene therapy to some degree already I imagine we'll fix things that are already known health problems for an individual.
Eventually other things will become possible, including modifications that are not about health. That's where dragons be. We'll at least need rules about modifications that aren't 99% understood and "guaranteed" to do what is wanted. We will also want to ensure some level of genetic diversity - not allowing everyone to make their kids blue eyed.
Of course giving the government the right to prevent some individuals from having children is an extremely slippery slope. States that are willing and capable of engaging in such things e.g. ( Communist China back in the 70s ) also tend to be run by extremely misguided and delusional people.