Ok so while my own opinions are evolving on this subject, let me help out Ravens a bit. While I am not a fan of the holocaust analogy because it just doesn't beg a normal conversation or intelligent discussion, I think there are a few things to consider at the life begins at conception marker.
Essentially, Ravens believes this, because the vast majority of the time, the initial fertilization if untampered with will proceed to a full term baby that is born healthy. So the eventuality is a life. The "process" has been put in motion. I think there is something to that thought.
While I despise late term abortion, I do very much understand the victim of a rape or incest not wanting to give birth to that child, and having it aborted BEFORE it can feel it. My wife is pregnant about 4 months. She can feel that child, and if he was to be killed, he would in fact feel that. Not a glob of cells any longer. Abortion is legal up to 24 weeks. That is astonishingly long, and is related to when the baby is thought to be able to breathe on his or her own and have the neccesary lung coating to not have the tissue stick together.
Maybe Ravens it would help to think of Gods own natural process in this way. If the body is under extreme stress or dealing with uncertainty to an extreme degree, many women simply miscarry. So the bosy through those stress indicators will basically "abort" the fertilized egg. Now of course this happens very early on, but to borrow a line from the WT, would God implant things within his creation that he himself disapproved of?