I agree on the surface. But where do we draw the line of choosing what we think (in our very limited human understanding of future events) is better for a child? Soon it’s GATTACA. As an extreme counter example consider if you could choose the race of a child. Or their melatonin levels. You might think one is “easier” for the child or even “better” for a happy life or something, but then at what point do you have that “right”?

I’m very pro-science but I also feel for the people with downs who are like - what? They’re going to end everyone like me in the future?