What sources are you citing? Some of that is true, but if you break it down to an individual crime and illness level, the stats are much more telling. Public intox went way down, so did hospitalization for alcohol addiction but binge drinking went WAY up and the hospitalizations and medical issues from such went up as well. Domestic violence went down also. But people DIED from bathtub gin and shine that was tainted with formaldehyde and such. The prison population went up because you had 30,000 instant criminals overnight and homicides in Chicago went WAY up due to the "beer wars". The VERY FIRST NIGHT prohibition went into effect, a beer shipment was hijacked and 4 people killed. The violence didn't let up until it was repealed and even then you had so many scofflaws who got their start in prohibition it lead to other criminal enterprises like drugs. Prohibition has too many different effects to paint it with a simple "it did" or "it didn't work".
I suppose if you were a gov't prohibition agent or a criminal it worked GREAT! The corrupt agents could get really rich, the few straight agents could wage their holy crusade. The criminals got rich and waged war on their rivals. I suppose the only loser in all this was the regular guy who wanted to have a cold beer when he got done at his job and had to risk getting thrown in jail during a raid, shot during a robbery, and had to pay three times the price of what he paid for a glass of beer in 1919.
The point I made in my first post was that the "bad" stuff, from an anti-prohibitionist point of view, is basically all that is spoken of or taught anywhere. There was an "up" side or at least some countervaling arguments. I acknowledged that prohibition had costs of many kinds but generally all we hear about is one side of the costs. I didn't render a final judgement.