I can see both sides of this issue. On the one hand there is a whole can of worms gene editing will open up that can get VERY ethically ugly and cause all sorts of oppression down the line.
On the other hand it is almost a necesity for any intelligent species to engage in it in some form (even if its selective breeding which is ethically just as questionable). The thing is when you build a society where people with health problems are given an equal or near equal chance of surviving as those without then over time society will be come riddled with genetic disease from poor vision, to diabeties, to congential heart defects. In the long run the only way the species will survive is if you start killing off anyone that isnt the best genetic speciment (which of course isnt ethical to anyone except perhaps a Nazi wannabe), or engage in gene editing.
Though still not even remotely ethical. Gene editing can at least be applied ethically if done right.