Look guys. This whole thing is pretty simple. You simply CAN'T make ALL drugs legal. For one, that's just plain stupid. You can't give people open and unrestricted access to be able to smoke a pop some X, drink some "clear liquid", sniff coke and so forth. We'd have whole cities just walking around talking about how the world is breathing. That's even if we consider that consistent drug use would fuck up procreation and deformities would skyrocket right alongside premature births.
The reason we have THOSE drugs illegalised is because they can actually HARM you without proper medical distribution. Someone who does meth is waaaayyyyyyyyyy more likely to keel over and die than someone toking weed. In fact it's pretty goddamn near impossible for it to be any other way seeing as how every human body will force itself to stop smoking weed when the human body has had enough. There is NO WAY to overdose on marijuana making it the safest "drug" out there.

Anybody know that marijuana smoke actually dilates the nodes in the lungs opening up breathing passages? Show me constant use of crack doing THAT.