A. Barton Hinkle points out the obvious:
Trying to solve the problem of addiction through incarceration is like trying to get rid of a cockroach infestation by turning on the lights. The temporary solution doesn’t address the underlying problem, which requires treatment. Sometimes locking a user up doesn’t even interrupt his using. Do a Google search on smuggling drugs into prison for an education on that front. If prohibition can’t keep narcotics out of prison cells, it won’t keep them out of playgrounds and office parks.
The Dish 