Most of the smokers I've known don't even get close to 80, and are often very sickly when they do. Two family members that didn't make it to 60. A healthy looking co-worker who dropped dead in the parking lot. A former boss who didn't get to enjoy more than two years retirement.
Cigarettes are the only consumer product that, when used as directed, kill their consumers.
Yes, where I worked they generously gave you a 10 minute mid-morning break. Unless you were a smoker, and "needed" to slip out 5 minutes every hour. I often wondered if I could get away with just "smoking" a straw.