For context, I want to elaborate on what I said because it seems like I got downvoted. My brother is disabled. Very few people would choose to get a disabled child (and I have to say, that would be fishy af in most cases - someone really has to self reflect before they wish for it. Some people seem to romantize the idea, similiar to how adoption is romantized, and it's fucked up). But disabled children simply exist. One can either be bitter that they can't live the lives they would have otherwise lived, or one can see the good in it. That's similar to how to handle the struggles of life - some struggles can never be solved so one has to learn how to live with it. And in some capacity, everyone has these kind of eternal struggles (it already lies in our humanity).

Some disabled children can be happy, in the end. So it would be a matter of the debate if they would be 'better off' if they weren't disabled, that would mean that they aren't 'worthy' just the way they are. They will always have special needs, though, which the caretaker has to take care of. And it's a matter of perspective how to deal with it. In my opinion, in real life, holding onto how 'the disability shouldn't exist' is the wrong approach.

Also, you seem to think that it's objectifying if one sees having a disabled child the way I described. It's not. It's similar to saying 'I'm a good mother', 'I'm a good sister' etc. It doesn't mean one sees the child as an object, it means that one takes on the challenges that come with caring a loved one, even if it's harder than expected.