Pro-thinking?

I saw this bumper sticker driving home yesterday:

"I think, therefore, I'm Pro-Life."

I don't mean to offend all the pro-lifers out there (just the ones who agree word for word with this statement), but look at it in literal terms. Being pro-life means you have a principle telling you what to do. You're not thinking, you're just doing. Talk about ironic.

I'm not making a political statement, I'm just analyzing the phrase as an objective third party.

That being said, I like thinking (actual thinking). And choosing. But hopefully will never be at a point where I am forced to.