People don’t live isolated from each other. Drug consumption has knock on effect on the rest of the population: traffic props up organised crime, addicts can be

People don’t live isolated from each other. Drug consumption has knock on effect on the rest of the population: traffic props up organised crime, addicts can be violent. Plus there is a direct correlation between social issues and the risk of becoming an addict. All of this is squarely in the remit of the state.