Trafficking will virtually disappear if the drugs they are trading are legalized and not criminalized. Would it not be better to undercut the drug market by having the state offer its own drugs to users? You would effectively starve out traffickers and producers, while making sure that dangerous substances are not being cut with drugs, which will reduce overdoses and death.

People will not magically stop using drugs if you throw them in a rehabilitation network many times. You have to make them want to be helped, and you have to remove the reason why they are using drugs in the first place. Do you think drug users are pushed to their circumstances by their material conditions, or are they pushed to use because they are destined to?

Removing third party influence, while advocating and pushing the people who are using to seek help are a much better solution. Would you rather a drug addict keep using needles filled with god knows what under a bridge where they then go and become a public danger and be homeless? Or would you rather an addict be given a clean dose in a medically supervised facility, while having their own apartment, and then incentivized to go clean with methadone treatment through some sort of benefit?