electronic cigarette

My grandfather is really a change smoker. He is already 85 years old now but he still smoking. I told him once that smoking is dangerous to his health though he will early. Guess what?! He said, if it’s bad for his health, why he is still alive now. I was speechless though but in a few second he laughed with me and made jokes. By the way, he is using the electronic cigarette now. Well, he has a daughter who lives in Canada and my auntie always gave him this kind of cigarette.