Since the legalization of marijuana in Colorado, we've seen a decrease in car accidents, decrease in crime, inceased tax revenue, and 37,000 fewer court cases for marijuana alone. The court costs, law enforcement fees and man hours have saved taxpayers millions while also saving innocent citizens from being treated like criminals.
There are, of course, plenty of challenges still facing the state. Regulators still haven't found a clear way to identify and label edible products. Testing for purity and potency is still a relatively new field.
But the sharp fall in arrest rates indicates one clear success of Colorado's marijuana program: rolling back one of the major excesses of the war on drugs.