Maybe, but you have to imagine at some point, things that are in the news will get discussed over a beer.

And again, I'm talking about fairly fundamental things here. If someone is pregnant, that's pretty conversation worthy. I also can't imagine someone not discussing seeing a new partner.

Ironically, the things you can "agree to disagree" on tend to be the ones that might not come up.

Since when has "I'm pregnant" been a socially-acceptable cue to start ranting about your views on abortion in either direction?

Generally, no, one does not respond to someone saying they're pregnant by suggesting an abortion. That's usually considered rude :D

But not all pregnancies are wanted. I have had friends talk to me about their decision wrt an unwanted pregnancy.