Smokers know that their habit is harmful to them. The evidence is overwhelming and I have seen at first hand the devastation of lives caused by prolonged smoking. Firstly, through my first boss at work who coughed himself to death at the age of 71 and then both my mother and father.
Later I noticed that asbestos disease and vibration white finger sufferers tended to be smokers. This does not mean that smoking alone was the cause but that I observed that there seemed to be a propensity of smokers who were sufferers. This seems to me to be less prevalent in mesothelioma sufferers.
An obvious feature of smokers is premature aging in the face with greater early wrinkles and breathing problems.
It is justice that Sir Walter Raleigh who introduced smoking to the Western world was executed.
If smoking was introdused today, it would be banned tomorrow but there are too many vested interests.