I agree with you. Even though I know smoking isn't good for a person, I don't think it is as big of a leading cause of cancer and other diseases as they say. I had two great grandparents who both smoked heavily and lived to be in their late 80's. But on the other side of the family, my grandfather and all 8 of his siblings died from emphyzema in their 40's and 50's. Most of them didn't even smoke. Hereditary? Definitely.