What is the down side of legalization. Does anyone believe that millions of people will decide to become addicts. And who will grow or smuggle the drugs into this country without a profit incentive. We will save billions of dollars in health and law enforcement costs, not to mention ending most of the political and police corruption and funding of terrorist organizations around the world.
The government can cheaply dole out drugs to those hopelessly addicted and use the enormous savings to create real anti-drug education campaigns (brainwashing, if you like) that begin in pre-schools.