The War on Drugs has not been successful.
No one can recover unless they are determined to do so.
China is the only nation has been reasonably successful in eliminating drugs from their culture. They did so, with a zero tolerance policy and orders to shoot to kill. Even then, it took a few generations.
No nation can afford to incarerate and/ or rehab all chronic addicts, for eternity.
Harm Reduction is the future. What's the alternative?