Answering the real question- it's unlikely these techniques will see widespread "recreational" usage any time soon, as they come with a wide range of risks. Further, the scientific community has learned a lot from previous eugenics programs; anything that happens in the future will happen with both social and political regulation.
It's ultimately hard to predict- many science fiction writers have speculated about this for some time, and social opinion can change quickly when people see new developments.
It will be that people just don't have children at all.