My hot take is that even if you can predict, isolate, and delete a genetic condition labeled as a 'disability' (yes they can do that now) that you fucking should not. You should either have the child you created and love and care for it until death do you part or give the child to someone who can.
A disability is not a curse. It is a genetic condition your child cannot change. Deciding to randomly delete shit from their fetal DNA is:
Eugenics (the study of how to arrange reproduction within a human population to increase the occurrence of heritable characteristics regarded as desirable. Developed largely by Sir Francis Galton as a method of improving the human race, eugenics was increasingly discredited as unscientific and racially biased during the 20th century, especially after the adoption of its doctrines by the Nazis in order to justify their treatment of Jews, disabled people, and other minority groups.)
Super fucking dangerous. You have no idea what that child could experience because you deleted part of their genetic code. The studies will not be conclusive on the effects of code deletion until the poor kids they tested it on live their entire adult lives and report back. And I'm warning you right now, that shit is not gonna go well. Our genetic code is designed very specifically and we do not know what it could do to the child in the long run without tons of further research.
Stealing. To remove part of your child's DNA? You literally grew that child yourself. Why are you taking shit away from them? Why are you removing part of their identity before they're even born?
A slippery slope. To go from 'I'm just removing my child's disability' to 'I just want them to have blonde hair' to 'I just wanted a boy' to 'I'm just making them smarter' to 'I just want a race of perfectly homogenous white people to rule the earth' to 'I'm just designing the perfect superhuman to be immune from all the struggles of the human experience so they can arrogantly decide that they're a superior being and punish everyone who isn't' to 'KHAN!'
Inconsiderate. Being disabled is not a mistake, it is not a flaw, it is a feature. A character trait. A human experience tied to vitally important ethical, moral, and intelligent insight into dilemmas which able bodied people would never consider on their own.
DISCLAIMER:
You are allowed to disagree, hate your disability, wish your disability genetic code had been deleted, feel conflicted about the situation at hand, be confused, ask questions, do your research, or sympathize with the people involved in the process and decision to do so.
You are NOT allowed to decide for all disabled people whether or not it would have been better for them to be born able bodied and able minded.
You are NOT allowed to shame people for their opinion to respect the original genetic code woven specifically to create them by their biological parents.
And you are NOT allowed to decide that your opinion is paramount, infallible, or singularly correct. It is not.
I personally am glad I was born disabled and have benefited greatly from it. It's been a profound and humbling and fascinating and lonely and haunting lifetime experience that I would NEVER give up just to be able bodied. It made me who I am (obviously) and I know myself (and everyone else on earth experiencing natural genetic life) to have infinite value because of it. I hope that helps.
More here.