The thing about MJ being a gateway drug though... I think it\'s more related to peers, social/economic standing, upbringing, availablitly, etc. etc.
I know people that did MJ on their way to some harsher drugs, but I don\'t call it a gateway for them, because they were on that life track before they ever did MJ.
I myself did MJ as an occasional, and I got into it with that intention, and stopped never having overstepped the bounds. MJ doesn\'t reduce your inhibitions beyond what you would do anyways (unless you smoke enough to just pass out) - I\'ve been at parties, gotten high, and been offered acid, coke, X, meth... and I was never temped, high/drunk or not. It just wasn\'t in the cards.
I\'ve never met someone who started doing MJ, and then as a result decided to try some harder drugs... everyone I know who does hard drugs (and I know at least a couple dozen), tells me that for them it was never really in doubt...
I think extacy is much worse as a gateway, because I know a couple ravers that never did anything beyond drinking, tried X, and about three months later were doing all sorts of hallucinogens, as a direct result.