I have been taking paracetamol and codeine for migraine for over 30 years. It is the only thing that kills the pain. My migraines are not frequent so on average on one day every month or so I take 2 to 8 of these tablets over 24 hours. I have never been remotely tempted to take more, or to use them for any other purpose. I have had no after affects. I do not feel 'up' or 'down' either when I take them or afterwards. They just kill the pain where aspirin, ibuprofen and paracetamol alone don't
The problem is not the drug but the addiction. Many addicts weaned off one addictive substance move to another, they don't take hard drugs, they become chain smokers instead. Tony Benn, I understand, is addicted to drinking tea, sufficient for it to made made him ill some years ago.
The majority of people go through life consuming all sorts of potentially addictive substances, alcohol, painkillers of all sorts, laxatives, cough medicines, coffee, tea, carrot juice, water, without ever becoming addicted and we cannot ban every substance that anyone ever became addicted to. We need to concentrate instead on those with addictions and what does or does not predispose them to the problem and how to deal with it. Banning everything that people get addicted to is just avoiding the real problem.