I was so glad when smoking was banned on airplanes. I have never smoked and always seemed to get seated in the first non-smoking row (how pointless was that!).

I've had smoking friends complain about not being able to smoke in hospitals (flammable substances+oxygen tanks=boom!) or movie theatres (there was a theatre in the US in the 1920's that went up in flames and lots of people died, which is why it's been banned in the US for many years, and why there are clearly lit exit signs inside theatres).