While I certainly agree with your tag line, your definition of addiction paints with broad strokes. Here is my question for you and the other physician (who has not identified what kind of medicine practiced) ... what is the definition of addiction?
I’m not a physician - my daughter is. But you want MY definition of addiction? Mine is probably not an accepted one, but OK here it is: Addiction is the taking of chemical substances for recreation that has proceeded to the point where the person taking them is either psychologically or physically dependent on the substance to maintain their wellbeing.