This this is funny.   
I smoke and I don't give a flying fuck if you're around me when I smoke.  Don't like it? Leave.  I do tend to be polite about it at times.  If I'm sitting at a traffic light and the smoke rolls into your car next to me, tough shit. Roll up your windows.     
However, if I am in a group of people who don't smoke, I'll do my best to either move a little bit back from the crowd  or blow the smoke the other way.     
My grand mother has been smoking since she was probably 18 or so? She's what.. 85 now I believe? Perfect health you can have at that age.  My dad and mom used to smoke (eons ago). Both of my brothers smoke.     
Shit happens.  I'll continue to smoke until I feel like I need to quit.  I'm already overweight now and if I were to quit smoking, I'd probably be rolling up quarter pounders and smoking them.  I'd easily put on a few more pounds.  My family doctor even told me last week that the cigarettes is somewhat of an appetite suppressor.  Right now in my life, I'd rather smoke a cigarette rather than eating some fast food junk and gaining more pounds by the minute.   
All your smokes are belong to Buck.