the tragedy of drugs is it can start in teenage years when:
1. people are in the most pain psychologically. friends, romance, etc.: it hurts in unique ways when you are young. turning to drugs is appealing to deal with this pain that would otherwise normally subside with age
2. people think they are immortal and invincible and their willpower is stronger than addiction. it never is
3. people are dumb. they can have a lot of book smarts but they don't have enough social awareness to understand where this all leads
so you wind up with ruined lives
addicts should always be treated the portuguese way" healthcare, not jail. it's just cheaper and a lot more humane
however the portuguese still go after dealers and the drug trade is still illegal. no country in the world is "all drug trade should be legal." no one thinks that works. because it proliferates more addicts
so it's a cost/benefit analysis: i am spending my money feeding and treating and housing addicts, or i am spending my money fighting dealers. i will probably do both, that's just the maintenance cost of civilization, but i'd like to jail as many dealers as i can first, to minimize costs and prevent the proliferation of more addicts
but of course, it costs society in terms of mafia proliferation when you make the drug trade illegal. yet don't forget: if you permissively allow hard drugs to flow freely, more people turn to them for their problems, and there are more addicts you have to feed and house
so it is a very tricky balance. a cost/ benefit analysis of going after the drug supply, or just passively dealing with the costs of addiction
and every drug is different. every drug needs their own policy. there is no such thing as one drug policy for all drugs. there has to be a unique policy for each drug. and each policy is some combination of going after dealers and treating addicts. for some drugs, you forget the dealers and just treat the addicts, with other drugs you have to treat so many addicts, it helps to crush the dealers
something like alcohol, it's better to deal with alcoholism and allow the drug to flow freely. that's the lowest cost on society
but something like heroin, it's very important to remove dealers ASAP, as heroin addiction is life crippling and easy to acquire. so the lowest cost is to go after the drug trade aggressively
something like marijuana, that should be completely legal and ignored. it's not addictive