Read each and every one of these posts: Digby, Amanda, Avedon, Tena and Echidne. They chew up and spit out a daft person who argues that complete abstention is a woman’s only answer to unwanted pregnancy.
Echidne, closes her fine piece with the following:

The truth of course is that our choices do matter, but they matter in a probabilistic sense, not in the sense of being meted awards and punishments by some cruel wingnut god. And humans are human, which means that none of us can control everything in our lives. Not even wingnuts can do that, though they would love to control other people’s lives.

Sadly, wanting to control other people’s lives does little to differentiate wingnuts from the common liberal. For example, with respect to the war on drugs wingnut and liberal politicians are pretty much indistinguishable. Combine the wingers and the liberals together the result is a beast that would have every aspect of your life under tight reign.

Originally via Atrios.