Being against abortion doesn't mean that you value the life of a fetus for religious reasons. It doesn't mean that you think it should be illegal. It doesn't even mean that you think it is in every situation immoral. I certainly don't care what a woman does with her body, though at some point when her pregnancy is far enough along that the fetus is viable I do think there is an ethical dilemma. Again though, morality doesn't always equal legislation.
He who loves God cannot endeavour that God should love him in return - Baruch Spinoza