I can see how you think that because you aren't a smoker, but when I smoked, you wouldn't believe the looks, the comments when they would walk away, the "you know you're killing yourself" statements. All this when I was in smoking areas. Very self-righteous. It's okay to say that to me, but god forbid I tell a fat person they are killing themselves when they are eating those fries. And I wouldn't do that anyways, because it's obnoxious.
My promise to smokers....Now that I have quit, I will never belittle you, make a fake cough, or tell you that you're dying when I see you smoke.