hey dax; I'm a father who has put three kids through college, with two still left @ home (1 hs sr, 1 in jr high). Wife and I have made a point to have frequent drug/alcohol conversations with all of them. From this limited experience I can tell you that drugs are much easier for them to get than alcohol. Pushers don't ask for ID.
Who do trust to not sell drugs to kids? Legitimate business people who have a licence/business to protect or a pusher?