I don't care about it. People and their parents should set their own guidelines and see for theirselves if it works or not. I've been allowed to drink and smoke since I was 'underage'. Smoke from around 11, and drink since 14, and it didn't make me a very bad person. I've stopped smoking and I since a few weeks I only drink in weekends. I wonder if there's a 'right' age for people to ruin their body, but hey, that's only me.