Liz, from the comments_
There is no middle ground here- there's not a "half life" it's murder or a medical procedure.
So what I'm saying I suppose, is that logically- the pro-birth movement works out for people that hold a certain set of inarguable beliefs
You've hit the crux of the matter when you use the phrase "set of inarguable beliefs". Claiming that anything is above reason flies in the face of every scientific advancement and rational thinker ever to exist.
Someone should tell these people that their own stupidity and complacency do not define the limits of human understanding.