The argument of genetic augmentation and alteration is that once you start down that path, where does it end? You would need create some sort of regulatory standards that relate strictly to giving the unborn an advantage that is only preventive, so as to avoid some mental or physical defects; anything beyond quickly becomes rampant designer choices or removes the fairness of a randomly dealt hand, an experience we are all more or less currently subjected to. This is totally ignoring that a person's identity might be well tied into their defects. Is it sincere or really in the best interest of the child to tamper with something they had no choice in? They already do not choose their parents, let alone their strengths or weaknesses, so how is it better to make them into what the parents wish them to be? Especially in a context where they cannot just "easily" change that about themselves?

Unquestionably if this were a realistic option a good parent [i]would[/i] attempt to act on this, hopefully for the right reasons of wanting the best for their child as [@Kratesis] said. What we all know is that people would exploit these ends and design children they [i]want[/i] to love. It raises an uncomfortable question of, "If I were different than how my parents made me, would they still love me?" Children already question how much they are or are not loved extensively, even if not in active, continuous thought.

While I am a proponent of using genetic engineering to mitigate potential threats to life and wellness, I accept that I would almost rather that not be an option for it opens a doorway to greater abuse, assuming I must elect one option. I do not look forward to a world of supermen and superwomen. Not just because I revere nature, but because it sets a standard of no more equal opportunity. As it is, not all people are biologically equal as some have inherent advantages that no amount of training or practice can make up for, but they did not choose these traits or have them chosen for them; they received them in the way any one of us could have. Creating a gap as small as allowing cosmetic changes allows for impactful changes to be made by less scrupulous sorts.