Striving on eliminating unhealthy traits by genetic modification is a possible direction. I see no need to preserve high blood pressure and diabetes tendencies when it’s a flip-of-theA to the C or G to the T or whatever it is.
So, that’s a kind of eugenics that’s possibly not so awful, although it might be.
But forced sterilization programs are too clunky and drastic.
As far as voluntary? That’s fine. But what about government stipends for not reproducing? How would you feel about that? [that’s where it starts crossing over lines]