Plus as far as I know it has been a nice boon to tax revenue in states where it is legal. I am curious to see what impact it might have on illegal trade as well.
Forget which state, but in one that legalized it they made so much money off taxes they had to pay people back according to a law on the books in like the 1920's that was never activated before. It was only like 8 bucks per person but still.