Yes it is true that your religious view will shape your view of abortion but it is not the only factor. Religious factors aside, abortion is also about conflicting rights. The fetus right to life (or even if it has rights at all) vs the woman's right to control her body. So the issue transcends a religious view, in the same what that you may have a religious view of robbery or murder, but yet expect the state to enforce laws around robbery or murder.
What you say is interesting, we should watch this program on the 23th this should be very good http://www.youtube.com/watch?v=4ScUKhmD7c8.
What do you think?