Contre, I think it's because people still recognise that a woman has jurisdiction over her body. You can withdraw your resources from someone who you never consented to take care of.
There seem to be gradients on this, though. If I were to discover during a cross-country trek that someone had snuck a baby into my car at the last service station, I would be expected to take the baby to the nearest authority (even if it was dozens of miles to the next town); I wouldn't be allowed to toss the baby out of my car. I'd not even be allowed to sedate the baby to the point where it wasn't bothering me.
OTOH, if you were to steal my VISA and sponsor a third world orphan, I'm allowed to cancel my payments; even if I knew this would result in the orphan's death.
I like your response. Good analogies.
I guess this would raise the question of what's the difference between passively and actively killing someone? I can't quite explain my gut feeling on this, but actively killing someone is far worse an action, even if they both end with the same result.
An abortion is an active process where as withdrawing your funding would be passive.
Your link
FOX News/Opinion Dynamics Poll. Oct. 23-24, 2007. N=900 registered voters nationwide. MoE ± 3.
"Please tell me if you think abortion should be legal or illegal in each of the following situations . . . ."
.
Legal Illegal Unsure
% % %
"If the pregnancy was the result of rape or incest"
70 21 9
PFFT FOX NEWS!!
I should read through pages I link entirely.
So in that poll, we had 21% illegal for rape incest and 50% illegal for unwanted pregnancy, which is ~30% of respondents who, as I read it, think abortion should be legal for rape / incest but not for just any unwanted pregnancy.