I had never smoked although my husband used to be a smoker. Since it is his habit, I just let him to avoid any discussion on the matter. However, in 2007, he decided to stop. For unknown reasons, he just quit and never smoked again. He gave away his lighters and remaining cigarettes to his colleagues who are smokers. I'm really glad about that because the house is now free of smoke odor and we save money no matter how little.
I do not smoke. My Dad died of lung cancer in 2002. He had even quit for over 20 years. Just goes to show how bad it is for your health.