Honest to God, I worked with a guy who tried to turn that very argument into an attack on pro-life conservatives. He said something to the effect that "they [conservatives]won't support abortion, but they'll get them at the other end with the death penalty."
When I pointed out that he was basically arguing criminal behavior was genetic and not learned, and/or he was saying blacks and Hispanics (the most common abortion demographics) were predisposed to criminal behavior, he got red in the face and stormed off (liberals do so *hate* to have their bigotry exposed :).
LOL, very good! Want to have more fun? Ask a PETA moron at a protest how it feels about abortion.