I didn't say that abortion isn't morally wrong. I believe it is. However, the essential words in that sentence are I believe.
Not everyone has the same moral beliefs as I do. Therefore, I will not change someone's mind by pounding into their heads the fact that I believe abortion is wrong.
That's why we have to use logic.
(I am leading you through an arguement that one may even use with liberals, here; This is called the Socratic method of teaching.
As Laz pointed out, I am doing it badly.
And, as Winston Churchil stated, "Personally, I love to learn. But I hate to be taught."
So you are forgiven if you decide to ignore me.)
Too many folks take all "exposition" and re-interpret as "pounding into their heads." There is a difference between exposing and imposing.
This is certainly true. Many people have many different moral philosophies. However, please do not fall into the trap of thinking that all moral philosophies are equal because they are honestly held. That is not so. Pro-life is right because it is Right.