There is one more point that I think is worth making re: the effect that smoking has on people other than the smoker.

If my mother hadn't died suddenly and unexpectedly, she would have died a long, slow, and very difficult death by emphysema. It would have fallen upon us, her family members to care for her and watch her long, slow, painful death. Is it fair or even consionable to put family members through such an experience needlessly?

Had she died a long, slow death, we could have just turned her back on her if we wanted, I suppose. But is it fair or even consionable to put family in the position of having to make such a choice needlessly? Yes, long lasting terminal illnesses happen to non smokers, or for reasons other than smoking. But smoking related illnesses are preventable, and are therefore a needless way to put family members through hell.