A lot of theft, burglary, robbery, assault, murder, etc. would simply not exist or be marginalized just like they are currently for alcohol. It's been awhile since I heard of a shootout over booze distribution. Yes, there is still a black market for alcohol, but the crime surrounding it is a tiny fraction of what it was during prohibition. No one denies that violence related to alcohol dropped dramatically after prohibition and obviously, the same thing will happen to other drugs as they're not special.