We can see in retrospect that criminalizing the consumption of alcohol proves not to be the solution to the very real problem of drunkenness. So to what I want to say is the very real problem of the human susceptibility to addiction isn't best dealt with by building prisons and throwing people into jails.
A Duke couldn't have the arse hanging out of his trousers when meeting foreign diplomats. Actually even plain old Sam Vimes never had the arse hanging out of his trousers, either, but no one would have actually started a war if he had.