I tried smoking one evening as a teenager. Remember the Bugler tobacco for rolling your own? Smoked one of those followed by a short hot pipe. Then I ran out into the yard and vomited all over the place. Wow, I was sick! Some years later I took up chewing tobacco and that got to be a real habit and very addictive. For at least 5 years after I stopped I would have dreams about having a mouth full of tobacco and savoring it's taste. What prompted me to stop was that I had neighbors on all four sides of me die of tobacco related cancer, plus two cousins. I felt someone was trying to tell me something.