(no my OC, I am attempting to help spread this that I saw first on https://programming.dev/post/33666663 because I think it helps to know that it is not too late to make changes even for major things like smoking and our health!)
Depends on your school of thought around addiction. Some people believe that once you have been a smoker that you're forever more an addict.
I agree with you though. 5 years without smoking you're probably not going back.