So you are saying that cultural attitudes overwhelm legal restrictions. If people want to drink or smoke marijuana then legality does not matter very much and

So you are saying that cultural attitudes overwhelm legal restrictions. If people want to drink or smoke marijuana then legality does not matter very much and just pushes people into criminal activity. So the idea that the only reason legal prohibition failed is that it didn't last long enough is refuted. You want people to drink less, change attitudes, not the law.