Habit or convenience?

I'm thinking about taking up smoking. Some people at work smoke and it seems like every few minutes they're standing outside taking a break while I'm inside (pretty much) working. How do they get away with that? I heard somewhere that you lose ten minutes of life for every cigarette you smoke but these people are getting out of work for ten minutes every time so I figure they are breaking even. So, I'm gonna start. Maybe cigars. Or even a pipe! A pipe would be cool! I know! I'll start cigarettes, cigars and a pipe. And dipping snuff. I can stand outside in the heat, cold and wind a long time if I do that and get time off for being sick and cancerous and stuff. Yea, that's it! Now, I wonder what I can do if I smoke crack...