Reality:
Prohibition is even more damaging. Prohibition of alcohol backfired and was a greater cost to society than legalizing it was.
To quote The Guardian, “Those behind Prohibition saw a ban on the sale of ‘intoxicating liquors’ as a crusade against a moral evil. But the big winners were Al Capone and the mob.”
With tobacco, smoking rates have fallen to new lows, thanks to regulation and taxation. Regulation and taxation of marijuana is a better approach than prohibition.