As you point out in another comment, every jurisdiction that has decriminalized drug usage while keeping selling drugs illegal has continued to police drug distribution. I'm not OP, but suggesting we stop policing drug distribution implies to me that we're making drug distribution legal. Which is to say, making selling drugs legal. Just like alcohol, tobacco, and caffeine. I'm not saying I agree that's what we should do, but it's a defensible position to take, and seems to me like the obvious reading of OP's comment.