If you had the chance to 'edit' a baby's DNA to get rid of a biological issue that there is a good probability they'd develop later on in life, would you?
If the procedure was safe and the side effects were negligable to nonexistant, then I would without hesitation. I'd go beyond that. I wouldn't take issue with completely altering the body to make it faster, stronger, smarter than it was before, even before the child is fully "grown up". Why not? The kid could always retrograde later on.
Would I legally require it? Nope. Would I fear an era where people are weeded out? What, you mean the "natural borns"? Personally I think things are already like that. I have genetically inferior eyes but this was solved early on with something called "glasses". Even though I was born this way, strangely if I am to obtain a driver's liscense, I must comply with a federal LAW that requires me to wear the dern things if I want to drive. GENETIC DISCRIMINATION! Perfectly reasonable discrimination in many cases where vision is especially bad without eyewear. I have no issue with this.
On the other hand, discriminating based on irrelevent genetic criteria? Sure I'd be against that. For example, I'd be against not allowing people to drive because they need glasses. By that I mean, in the case where they don't care if you got your vision repaired with glasses or contacts or laser eye surgery, they won't let you drive. THAT would be illogical discrimination. I would also be against the development of two "factions" of people violently opposed to each other, perhaps treating the "moddified" with scorn like in some cheap comic book or sci fi story.
By the way, if you wonder why we suddenly get all defensive about this. Well, what are we supposed to think your opinion is? Your questions alway seem like you have some opinion you don't want to actually share. If we're arguing against an opinion you don't have, why not just say it?