I have been an absolute opponent of abortion, euthanasia, and capital punishment my whole adult life. When I was a professor of moral theology at Fordham University in the mid-1980's I happily defended the view that artificial birth control is morally wrong. This was at a time when many, if not most, actually Catholic moral theologians wouldn't do so, or wouldn't do so strongly.
I have not left religion or Christianity. But I have left Mormonism. I have become a deeper, more intellectual, more spiritual and truer Christian than I have ever been, literally. I am converting to the Roman Catholic Church. All true roads do lead to Rome.
Link (here) to Richard Sherlock Prof. of Philosophy at Utah State University and his story at Why I am Catholic