Subutex and Suboxone
It's a pity Subutex and Suboxone weren't available back in the 1950's. However, although the terrors of withdrawal are mitigated so effectively today with this effective remission medicine, the incidence of recidivism is made much more prevalent due to the ease of recovery from relapse. Notwithstanding, the miracle of modern medicine is a genuine godsend for those unfortunate individuals who fall prey to the horrors of narcotics addiction.
Hopefully, new, non-addictive pain relieving drugs that are non-narcotic will be discovered that might possibly make the use of opiates a thing of the past. Of course, that wouldn't prevent recreational use of euphoric narcotics, especially if new medicines don't carry with them the same blissful effects. Nevertheless, I have faith that illegal narcotics such as heroin and cocaine will eventually be virtually (if not completely) eradicated due to the overwhelming negative notoriety of these poisons that prevent them from achieving the popularity they enjoyed in late 19th Century China, despite their statutory prohibition and the heavy penalties they carried in that threatened society.