Kids who need to get wasted regularly in their mid-teens have problems that are not related to the intoxicant. It's a symptom, not a cause. I grew up in the 60's. I know people who kicked smack, the wide ranges of speeds, booze, but I never saw anyone get the shakes because they couldn't have a joint. Support lines for grass addiction are bullshit; they are support lines for an underlying problem.

Disclaimer: I don't use the stuff. I have, and I don't like it. It makes me stupid(er) or at best unconscious.