A large majority of people do not smoke, or no longer smoke, and tend to accept certain bits of conventional wisdom without question. Smoking tobacco being harmful to one's health, smokers therefore need to be protected--even those who would choose to, say, patronize their own smoking restaurants and bars. And we can count on government to enforce regulations and bans to this effect. But what if smokers get something from their "vice," and that this can be explained in economic terms? The answer could be found in the concept of consumer surplus.