You only draw conclusions based on your own experiences, sir, but you must think beyond yourself to the six billion or so other people. While it may not be a physical addiction, a psychological addiction can manifest itself. As a habitual smoker you are used to an act or a feeling, or a mindframe from smoking everyday, all day. To suddenly be thrust into a sober reality can change a person. Their world isn't the same as normal and it confuses them. It's kind of like coming down off acid. Truth be told, humans are creatures of habit and if you change someone's habit it bothers them. You might think yourself stronger, but really addiction is a disease.