Pam, you are absolutely right. The alcohol model needs a tune up. We should not be staging adds to appeal to teens. We should not be making glossy magazines normalizing and glamorizing alcohol as though it belongs in every day life. But going back to prohibition, having epidemics of blind and dead teens from methanol laced drinks I would like to leave to other moralizing jurisdictions that still have these sorts of problems. 
There is absolutely  no sign that cannabis sales will mirror alcohol except in the most important ways. Guarantee a pure accurately measured dose with exact contents labelled (cannabinoids/terpenes) sold with taxes in a safe criminal free location. With information about potential harms and access to any programs to deal with those harms. Stop squandering money sending police out after marginalized youth with trumped up charges and let them do some real work. Give these kids a chance to grow up with no criminal record.