I have written time and time again that smoking is very very unhealthy. This fact is universally acknowledged.
Once more I am in a state of confusion of how people who want to improve, or maintain, their health can continue to smoke.
Smoking is of course incredibly addictive. Quitting the habit is thus very hard – but it can be done by anyone, even those with a genetic predisposition to metabolizing nicotine (albeit harder for them). Anyone can still go and get their nicotine in gum form though, that at least will undercut a huge amount of my complaints.