Someone only "kinda wanting" to do cocaine is indicative of a non-addictive personality, therefore use of cocaine is of minimal risk for these individuals.

From my understanding, this is most people.

Addiction is the problem, not the drug itself. And it will always get channeled into something destructive; ie. gambling, sex, alcohol, sugar.

You can't ban everything, but you can treat addiction.

Removing stigma, shame and punishment encourages people with addictive personalities to seek treatment, which is the only long term solution.