PZ never disappoints and this is the greatest pro-choice blog post ever. I am going to archive its ass here.
“The argument is never about whether some state is alive or not. Your appendix and tonsils are great masses of living cells, but if the organ becomes inflamed, doctors will cut them out and throw them away. Every time you poop, about a third of that mass that you excrete and flush away consists of living bacterial cells, yet no one hesitates and feels regret at the tragic loss of life when their hand is on the handle.
The argument is about whether that living thing is a person requiring extensive legal and moral protection, and it’s entirely clear that “life” is not a sufficient criterion, or people would be lobbying for the protection of turds and tonsils. We are not absolutists about protecting all life; we can’t be.”