Myself, I'm the, "man lets get to the top of that hill before we smoke that joint"
Yeah, me too.
My final paper was a project; "Drug use amongst adolescents", studying a local group of 15-19 year-olds.
Although limited and probably requiring a little better science in places there were several really interesting things that came up.
First of all, in a British (or I would imagine the US for that matter) school system, you can plausably test non-invasively for drug use by a simple questionaire. Drug users know WAY more about drugs than non-users as drug education doesn't equip young people with the knowledge to stay as safe as possible if they use drugs - which they to one extent or the other will. Non-users are fantastically more likey to suffer from a potentially lethal misconception about drug use than drug users. And comprehensive drug education doesn't increase use, as the fact more English teenagers smoke pot regulary than Dutch teenagers shows.
Second, almost all drug using respondents agreed strongly with statement that "After I found out more about drugs, I realised Government representation of drug use and users was misleading".
Third, drug dealers offer people drugs other than what they came for.
Only the idea about testing for drug use with a questionnaire is anything new.
Pile loads of research together and you see there is no stepping-stone or gateway effect. There is what I call a domino effect. If the manner of obtaining drug supplies means people are offered other drugs, then some will accept those drugs when they otherwise would not have.
How many smokers start smoking 'cause everyone they go out and drink with smokes? Or vice-versa? How many cannabis users offered speed by their dealer turn it down?
A controlled system of supply, like in Holland, means that if you go to a coffeeshop and buy cannabis, that's what you'll get. You can also get 'Smart Drugs', Mushrooms, drinks (some coffeshops don't serve alcohol), food... but no speed smack or coke.
It stops people being tempted to experiment with far more dangerous drugs. A domino falls, but there's nothing next to it to be hit.
If people want a recreational chemical they WILL get it. This has been proven; prohibition breeds crime by creating a massive potential for profit. The trick is setting the rules up so the inevitable causes as little problems socially as possible.