My favorite book on the topic is "Legalize This!" by Douglas Husak arguing that we should decriminalize all drugs.

Surprisingly, the prohibition of alcohol in 1920's did not punish alcohol drinkers, just distributors. This model for drugs today would be a major improvement over the draconian treatment we have of the non-violent drug offenders.

https://www.amazon.com/Legalize-This-Decriminalizing-Practic...