I quit in 1988 - I am 66 years old and smoked for 25 years, quitting every once in a while during that time - smoking 2-3 packs a day near the end years. I quit when my dad died of smoking-caused esophageal cancer, a real bad way to go. Hardest thing I ever did! If it hadn't been for pot, acupuncture and divorcing my 2nd ex-wife, I frequently joke, I couldn't have done it. Throughout I rode, ran, played city league and indoor soccer, and gym workouts to exhaustion. Actually I loved smoking, but then I am kind of an addictive personality. I was in a bar last night with my band on a gig and cigarettes are $8.00 a pack out of that machine. It's better to leave them alone.