Like fire, if you play with it, sooner or later you get burned. I refer you to the NIDA web site. There are slides showing the effects of several drugs on the brain. Marijuana has long lasting affects on the brain. Alcohol causes dementia.
Cocaine causes strokes and heart attacks.
You don't hear about that. You only hear about the highs they get. The overall affects are devastating. Call information for the number of the local chapter. The reason for that is that the ad campaign is part of a larger set of activities focused on helping kids and families reject drugs.