i know the secret of reaching 100 as a smoker.
1 of my father-in-law is 88 now. born in year of cow. he smokes "long-live" from tw. he wouldn't last 2 more years.
another one of my father-in-law reaches 100 this year. also born in year of cow. he smokes only generic brand. and still in good health. the docs that told him to quit 20 years ago all dead before him.
so, the secret is smoke only generic brand!