Since teens report that they can get pot more easily than beer or cigarettes, it looks like the most effective way to keep pot out of teens' hands is to legalize it for adults - so sellers have an incentive not to sell to kids (namely, the loss of their legal adult sales).
Given the attitude of most adults seems to be ‘keep rolling out the cheech and chong’, it seems to me that enforcement is going to be ineffective when you have parents not bothering to actually parent.
And yes, I’ve dealt with this attitude from boomer parents to my drug dealing friends. Incredibly frusterating when their ‘clients’ steal from you to feed their habit and you know who’s dealing because he’s driving his shiny new car and pushing dope in the neighbourhood.
But go on - tell me how it’s a victimless crime. It’s not. First victim, the users.