I smoked for about 45 years and to be honest I never felt any ill effects from my habit. My parents smoked and drank heavily and led long and healthy lives, and of the few people I have known who died of cancer, only one was a smoker and his cancer was not smoking related. So the only push to quit has come from the constant stream of demonisation from the anti-smoking groups. However it is very hard to ignore the constant nagging and nannying and I did cut down on smoking from about 15 to about 6 cigs a day, but I felt very strongly that smoking was doing me some indefinable good; making me happier and more alert. Just over a year ago, I bought an ego kit as an experiment and I immediately found it an acceptable substitute for smoking. I continued to have the occasional post-prandial cigarette until my tobacco was used up but after that I felt no urges and have happily used the e-cig ever since.