I share the same sentiment as darth_ender. I'm against abortion, unless there is a malformation, or when the mother's health is at risk and when a woman has suffered from rape.
However, my view has nothing to do with at what stage is the fetus considered to be a human being or not, but it's about responsibility. As such, I don't understand the "pro-choice" argument. People did have a choice. Getting pregnant is only a consequence of that choice. When people choose to have sex, they should know the risks and consequences of such action. Abortion is only a way to escape from responsibility.