Over at the Unreasonable Faith blog, Daniel Florien posts a YouTube video in which anti-abortionists are asked a very simple (and fair) question: If they want abortion to be a crime, what penalty do they propose? One after another, they flounder, unable to give an answer that is even coherent in most cases. One young woman has a few more-or-less coherent remarks that lead her down an uncomfortable path of claiming that maybe it should be life imprisonment, depending on whether the woman understood what she was doing. The rest of them make no sense at all. In all cases, they are embarrassed by the question and unable to discuss it with any confidence.
As Florien comments, they are not able to take their beliefs to their logical conclusion because they know it would be absurd and unfair.
By and large, people who want abortion to be illegal are simply idiots who have a view that is unworthy of your respect (though they have every right to express it of course). The video provides nice evidence of this, just in case you needed it.