Sorry. Drug use is decidedly NOT in the same class as murder, rape, robbery, or other violent crimes. Ultimately use of drugs is at the choice and at the peril of the person taking them. Further, use of our crimnal justice system is intended to protect us from those who do violence. Not protect people from their own extreme folly.
What America has is not nearly as much a drug problem as a God (or rather, no-God) problem. Why were addictive uses of drugs shunned widely enough that nobody thought to ban them until around the start of the 20th century? Because “no good Christian” would countenance purposely embarking on such a use.
We’ve bid adios to God and we don’t even have a reference for devil any more that doesn’t give rise to a cornucopia of mockery and “Oh, that’s so middle ages.” And those who would manipulate language are right. If you can’t openly talk about the devil and God, about temptations to damning yourself with sin and about salvation from sin, the closest you can get is within the private confines of a church or (maybe, in a way) in a 12-step group.
Our government does plenty of things to protect people from themselves. Gun safety/training requirements, driver’s license test requirements, seat belts, speed limits, closing down dangerous roads/bridges, fire and building codes for your home, vaccines, school truancy laws, anti-gambling laws.
Making a safe, productive society includes protecting people from harming themselves or becoming wasteful burdens on society. It’s an irrelevant distinction. Whether you’re harmed by someone else or by yourself, it creates problems for society in equal measure. Drugs fall even less into the category of “only harming yourself” because of how easily the damage can spread to other people, e.g. neglected families, intoxicated driving, children finding the drugs, employment problems, school graduation problems, people added to welfare rolls, etc.