Because the the damn fool political debates contain questions like this:
Do you believe there are any times when abortion is killing a baby? Yes or No?
If a million people die in the next 9/11, would you be willing to chill out about torture? Yes or no?
If you asked me either one of those questions and seriously anticipated a Yes or No answer, I would punch you in the nose. I am not a violent person. I abhor violence. But I would be unable to resist punching you in the nose. And smiling while I did it.