Is there a need for more proof of impossibility after prohibition? Which have been tried in multiple countries and always with similar results. The issue with

Is there a need for more proof of impossibility after prohibition? Which have been tried in multiple countries and always with similar results. The issue with alcohol, smoke, caffeine, soda, refined sugar, is that they are not very harmful so people can say "my grandfather used to drink every day and lived to 95". The hard drugs have much more visible effects so people are better at rejecting them.