Rome likes to color it's history on this issue and a lot of other issues.
My dear ealgeone, I think we have been friends good enough, and long enough, for me to say:
Your ignorance is showing.
You should check out THE truly comprehensive (in the historico-academic sense) study of the legal and moral history of abortion through the centuries, written by John Noonan, and then get back to me:
The Morality of Abortion: Legal and Historical Perspectives