I found a pretty good one at http://www.poodwaddle.com/health/lifeclock/ . For fun, I took the quiz, including the 30 cigarettes a day I smoke under "Smoking", then took it a second time, this time saying "I quit", setting the "How long ago did you quit" at zero, as if I were to quit today. Smoking the amount I currently smoke, my life expectancy is 78. BUT, if I quit smoking today, my life expectancy jumps to 83. SO, do I want to quit, and pick up those five years, or, do I want to spend the rest of my life dying for a cigarette?
I'll take the cigarettes, thank you!