I'm trying to ask a deeper question in response. Asking what "our children" means was an attempt to get there with a somewhat Socratic method.
What I'm trying to do is get you to consider the full implications of not caring about whether things are "natural". What if we not only swapped around genes, but edited genes directly to cure things? What if we added enhancements? What if we completely genetically engineered babies from scratch and called them "our children", would that be okay with you? What if we made AI enabled robots and called them "our children"? Why not... just not have children at all anyway? At what point do you draw the line, and by what principle? To say that "natural" humans doesn't matter raises the question of why "humans" matter at all in the first place.
I raise the issue of the "human experience" because that's the paradigm I live in, and I wonder what I'm going to do without it. I suspect that anybody who cares about "the next generation" but doesn't care if babies are "natural" also thinks they're living within the "human experience" but they haven't thought it through. I think that if you don't care about "natural" babies, you might as well go all the way and be an anti-natalist. I'm actually quite open to that as well, at least it's consistent.
BTW one way of avoiding genetic diseases without genetic engineering would be genetic screening. Such things exist as I understand, I met a guy who said he worked for a company that did this sort of thing. Certain couples just avoid having children. Maybe they can adopt. Is that unfair to them that they don't get to have "their" children? Again, why does that even matter if you don't care about things being "natural"?
Thank you for continuing this conversation so late after the article was posted, btw. Now that I've laid it all out I wonder what ideas you have in response.