A friend of mine recently posted this ProLife article on his Facebook wall. It is definitely worth the read, showing that losing faith in something bad is a good thing in the end.
Why I Lost Faith in the Pro-Choice Movement by Jennifer Fulwiler
It is also worth reading the links contained within the article, especially this one:
image - http://theagnosticswife.wordpress.com/2012/10/18/from-pro-life-to-pro-choice/