"I could say the same about abortion. An innocent person always dies during the procedure."

This is you, projecting your highly arguable definition of "person" on everyone. Guess what? You don't get to decide what I believe about where a fetus stands in the development of personhood. If you regret your abortion, deal with it. If you wouldn't have another, FINE. Don't. But you do not get to dictate to me that I cannot have one if I so choose, simply because YOU take (in my opinion) an unscientific and overly sentimental perspective on the potential of an early, developing embryo.