If nobody uses a drug none will become abusers, and then enforcement will not be necessary because addiction based crime will not happen.
This depends if course on what the costs of drug prohibition are relative to the costs of addiction based abuse, but that’s a pragmatic question subject to empirical debate. It can’t be determined from first principles.
Punishing the few abusers harshly is still a lot cheaper than punishing abusers, moderate users and producers, which is what the status quo does.
If nobody uses a drug none will become abusers, and then enforcement will not be necessary because addiction based crime will not happen.
This depends if course on what the costs of drug prohibition are relative to the costs of addiction based abuse, but that’s a pragmatic question subject to empirical debate. It can’t be determined from first principles.