A secular case for pro-life?

An attempt is made here. I have said this before, I am baffled that nobody ever tries to make how rarely I hear a secular, non-religious argument against abortion. The argument does exist, but the pro-life movement has been made up mostly of the evangelical, religious right, and they of course, don't bother with secular arguments.

(Edit courtesy of the ever-astute Michael Brendan Dougherty.)