I'm assuming you've never known anyone go through that. It's a personal tragedy, not an intellectual issue.
Someone saying: "Don't hit me, please" is also an argument from emotion.
Also, when arguing if something is in a particular spirit, it's appropriate to discuss emotions and principles.
This is basically what happened:
A: That seems dangerously close to eugenics, in that it's weeding out people with bad genes.
B: Oh yeah? If you distorted your view by listening to crying moms who agree with me (and not similar weepers on the other side), you'd agree with me.
Me: Argument from emotion.
Eugenics is relatively easy to judge: you can get all the facts. Individual decisions are always harder: you don't know the full circumstance. I'm not saying that their aren't abortions made for obscene reasons (terminating girls is an obvious example), but not all are.
And there goes my karma down in 3,2,1,...
The problem is: there's no good words to use, because they've been co-opted by political positions and value judgements. "Baby" indicates you're anti-abortion, "foetus" indicates you're pro-abortion. I went for pregnancy, because that implies the "potential to be a baby".
"Terminate" has the same problem. What are the alternatives? "Abort" is pretty much taken by the pro-lifers. It's such an emotive issue that in the UK, where there is no broad based political movement that wishes to outlaw it, medical professionals don't even have a word for it. They have words for specific procedures like EPRC, and as far as I can tell they change those terms every couple of years. And of course, the terminology is the same whether the pregnancy is still ongoing or not.
And yes, it was very much an accepted area of thought and research in academia from the late 1800s to the end of the second world war. It wasn't until it became associated with Nazi Germany that the idea became taboo.