I guess what I am saying is, we know its bad, at the worst end of the scale there are druggo, alchos who really don't deserve to be parents anyway and who smoke the whole way through. We can't make them sterile, they probably won't change (although some may).
Then there are those women who smoke and try really really hard and get down to one a day. I still can't believe that you lump them into the same category.
Anyhow -thankfully we still have bodily autonomy.I don't think that would do anyone any good really.