I refuse to argue about abortion. It only breeds bad blood. The only time people usually change their minds if suddenly they find themseleves pregnant when they don't want to be, or see a freind in a terrible crisis of pregnancy.
At one time, believe it or not, I was anti-choice (I was very young, a virgin, thought I would be one until I was married, and raised VERY Catholic. I saw a good friend in an impossible situation; pregnant because she had sought affection in the wrong place, having an abusive, alcoholic father who would have literally beat her half to death if she came home pregnant. She had no choice, and it totally opened my closed Catholic mind. It was absolutely mind changing, because I had been brought up (wrongly) to think that women who wanted abortions were evil, selfish, child hating demons. This girl was anything but any of those things. She was an abused girl in big trouble. I saw how she was treated in her home and it occurred to me, "Holy crap, this girl literally has no choice
but to end the pregnancy." She asked me, tearfully to go to the Clinic with her and I was gobsmacked. It turned my world upside down. Here was a very nice, sweet, loving girl who found herself in an impossible situation with only two outcomes: come home pregnant and probably end up in the hospital beaten to shit (and in those days DCFS rarely got involved with teens who were abused) or end the pregnancy and move on. She chose the SANE, but difficult choice of ending the pregnancy. She is now a loving, caring mother and wife who regrets it HAD to happen, but was glad the right to make her own choice (and not be beaten to death) was there for her.
I've been more open minded since that day.