I am undecided about abortion. On the one hand I support it because it is killing children. On the other, it gives women a choice.
How do you feel about one choice versus the other?
Well, if it is a man he can stay and support them, but women have no purpose. If she wants to be selfish that's her choice, but I would disown her straight away.
It is good that you have mixed feelings about abortion, because there are no easy answers, and nobody should be judged for their feelings about such a sensitive issue as long as they don't try to force others' hands.  However, it also sounds like you are treating the women in your relationship as property that you can disown, and this is not fair to them.  If you love someone, you should make choices together, but accept that ultimately each one of you has the final say about your own bodies.