I see. Who gets to decide? What if I decide you are one of the ones who should be eradicated because you aren't good enough?
The parents get to decide on their own fetus.
Just let the mother decide. Just let her take the moral responsibility. Just mind your own business.
We live in a shared society with shared consequences. It is our business to protect the defenseless.
First of all, it isn't person out in the world defenseless against a hostile environment (as it indeed would be if abandoned while afflicted unnecessarily with a condition that rendered it incapable of understanding and dealing with that hostile environment). It is in the woman's body, under her control, as was the choice to conceive.
Second, do we want to take a look at protecting the defenseless? Personally, I very much would like to. Who, what group, is the most defenseless, most suffering? Women. Even in our society, where everyone really, after all, has it pretty good, women often have it a lot worse than we can tolerate. In the world at large, there are broad swathes where women are either literally or very nearly chattel. Let's start with them, this huge part of our population, our sisters. It is much more important to save so many instead of debating details over who gets to decide for a woman what is going to happen to her body.
'Liberating' some far away potentate, even if it isn't just for oil or something other than high ideals of international law, is often enough engaged in. What about liberation for our sisters? "Oh, not by war, certainly", you may protest.Well, we have very powerful means of media persuasion. America got the entire earth drinking "Coke" and wearing jeans and using the Internet and deficit spending. We could work on just subverting whoever is responsible for doing this to our sisters. We could have tried that against the Nazis, too, but it was pretty commonly held that such a course would take too much time. So, if there were ever a cause for militant 'evangelizing', this would be one.
So, yeah, let's go there. Let's talk "protecting the defenseless", because after our sisters there are other collective measures that need taking.