We were learning about this in school. I’d imagine the majority said they wouldn’t do this, but there’s definitely some who thinks it’s a good idea (like my uncle, ahem ahem).
But if you had the option to mess with genes and give you the “perfect” baby and you knew what they would look like beforehand, would you do it? You could give your child “desirable” traits while the children who don’t have those traits are inferior, or you could love your child considered “inferior” by society as they are.
If you haven’t seen the movie Gattica, you really should.
The issue comes down to the misalignment of what’s best for an individual, and society.
Individually, genetically pre-screening embryos (or even altering them) to maximize a kids chance for success is a no brainer. Of course the vast majority of people would do that for their kids if they could.
But that bumps up against the problem of then creating an extremely homogeneous society. They tend to be brittle and stagnant. Deversity is strength for large populations.
Since individuals will absolutely embrace eugenics given the chance, it needs to be strictly regulated and stigmatized by the government. But democratic governments are (ideally) responsible to the will of the people. Given that, unpopular regulations are unlikely.
What happens, happens.
All we can do, is all we can do.
There’s also The Eyes of Heisenberg by Frank Herbert that covers this kind of thing too.