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Presumably many of the people who quit were older so their years of life saved isn't as great as younger people. Also probably doesn't undo the emphysema, COPD and heart disease that is common in older smokers, although risks are considerably reduced within a year or two of stopping smoking. Obviously can't reduce the years lost from dying before someone stopped smoking.

The way that works best is higher taxes, although it is possible that in places like Australia they now exceed the medical costs that our public health system spends on smokers. Australia is also greatly restricting the areas that people can smoke in public places.

In the end, I tend to sympathise with peoples right to smoke, the important thing is that it doesn't affect my rights.

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