[fleekonpoint]

This Washington Post article says that teen drug use is down in Colorado after they passed marijuana legalization: https://www.washingtonpost.com/news/wonk/wp/2017/12/11/follo.... I think it's due to the reasons that others have mentioned - that minors can't buy it illegally from stores and the drug dealers they used to buy from are now irrelevant.

[umvi]

Minors can't buy Juul legally from stores either, yet Juul usage is skyrocketing among minors. I think it has less to do with the legality alone and more to do with fashion/image/etc (which is enabled by legalization).

Marijuana might be down now, but I could see THC Juul pods or MJ pills or some other form of legal marijuana becoming a fad among minors in the future and usage skyrocketing. Legalization is the enabler in this case.