An international ring of human organ bootleggers involving people in South Africa and Brazil was broken up earlier this month. Almost everyone thought that these transactions--even though they saved some people's lives, increased some people's options, and involved no force or coercion--were evil. Opposition to selling organs is visceral, so to speak, in most people, and is reflected in the laws of nearly every nation. We've all heard the urban legend about some poor schlub who groggily comes to in a hotel room writhing in pain with a huge set of stitches down his back, usually in a bathtub full...