I can't answer your question, Toad, and hope I haven't given the impression I think of myself as a know-it-all, because I'm certainly not. Maybe its my writing style -- though I consciously try to salt my views with 'I think' and 'it seems to me' as often as I remember to.
My best attempt at an answer is to say its a gray area and that there are probably dozens of different answers depending on your background, religion, training, politics, etc. Why is it so important to define exactly when human life begins?
Personally I shy away from abortion discussions, because as a man, I just don't think its any of my business. I'm never going to be pregnant or face the pain or joy of birth. I wouldn't want a bunch of women arguing about and determining whether or not it was OK for me to get a vasectomy. I think it would be an interesting situation if all men would just shut up about it and see what a bunch of women decide.
Laz, abortion and the right to chose are different because if you have the right to chose - you have both options. Plenty of women with the right to chose an abortions would choose not to have them (as I assume all anti-abortion women are doing everyday - even though they are still legal, they choose not to have them) I'm not sure about any mother killing her son on death row - has that ever happened?
To me, the abortion issue is one where the conservative republicans and their politics of personal freedom and responsibility have completely dropped the ball, and suddenly favor government intrusion into people's lives. I always thought the Dems and Repubs positions on abortion should be exactly reversed, and then their positions would be more consistent with their overall positions on personal freedom vs govt controls.
It seems to me, anyway.