Almost all "pro lifers" are religious. Their religion clouds their judgment.
What bothers me is preaching abstinence and treating sex as if it is evil actually increases the number of unwanted pregnancies.
Yet the same people who deny easy access to contraceptives and adamantly oppose sex education are the ones most pissed off about abortions.
I think more focus should be spent on preventing unwanted pregnancies through proper education than on trying to muck around with the abortion issue.