As many here have stated, cigarette smoking can be a very expensive habit for the consumer. It's also costly in terms of treatment for long term heart and lung ailments.

Another thing that I've noticed is how it interferes with the work day for some. I've worked with people, who would need to smoke a couple times each hour. They'd have to get to an elevator, exit the building and return. It is a major distraction to getting work done. Of course, most smokers don't smoke as frequently.