From what I see it is alcohol that is the major problem.
You keep on making me guess your point.
So here goes:
Assuming you're correct, and alcohol is a bigger problem than drugs, therefore:
Because alcohol is a bigger problem than drugs and is legal*, therefore, if we--like drugs--ban alcohol, it will become a smaller issue.
* Except it isn't legal for <21 year olds to drink...
Am I getting that, right?