Fair enough- and you're right, on review I see it depends a lot on your age when you quit. Basically: smoking knocks ten years off your life. Quit before age 44 and you get 9 of those years back. Quit by 54 to get back 6 years, by 64 to get back 4 years. But quit before age 35 and statistically you get back all 10 years.

I wonder why my family is so atypical. My aunt smoked until she was in her early 60's. She passed away earlier this month at the ripe old age of 96. My uncle also smoked until he was in his early 60's. He is still alive and kicking at 92.