It's the same logic as how giving your seven year old child a cigarette would cause people to go berserk and basically equate you with Hitler, but feeding them to a diabetic ball is fine. Beyond peoples retarded opinions, the former would probably give random government agencies the right to take your children away, but the former is fine, and if anything the government will go after you for criticizing it.  Not that I support smoking, or letting your children do it.