[vsef]

Some people do choose to have deaf children: https://jme.bmj.com/content/28/5/283

There was quite a bit of outrage around that case from hearing people, but it seems no different than two parents with genetic deafness choosing each other and then not trying to use genetic testing/embryo selection to have a hearing baby.

I do think when this type of genetic manipulation becomes possible/mainstream there will be many traits chosen by parents that aren't considered universally desirable.