My Mum smokes
My real Dad smokes
My younger sister smokes
All my grandparents smoke
All my aunties smoke
Most of my colleagues over the years have smoked
60% or so of my non-internet mates smoke
I don't smoke. I'm not a frothing-at-the-mouth anti-smoker, but I'm no huge fan either.
From an early age I noticed that people who smoked seemed (to me) to be overriden by cigarettes, like it was a bit of an obsession. My mum always had to make sure she had fags, like they were as essential as your house keys and wallet.
As I got older, in my teens mates were constantly worrying about how they would afford more fags, how they could hide fags, or how they could sneak off to smoke. Sod that, I thought

My stepdad (former smoker who quit in his 30's) made a bet with me when I was about 14 for £50 that I'd be smoking before I was 18. Now to most kids these days £50 is bog-all, but when I was that age I considered it a serious wedge of cash. Still do!
I stuck to my word and never smoked, the old man paid up on the day of my 18th, he never forgot and still had the "Potential IOU" I'd written 4 years previously in his wallet.
I suppose I've always people who smoke as a bit weak, I'm probably wrong of course but all my exposure to smoking has been negative - people always going on about craving/needing/dying/gasping for a fag like cigarettes ruled them and I never fancied being part of it.