People don't listen to sad songs because it makes them sad; people enjoy sad songs. Tragic plays don't make you feel as if the tragedy had befallen you. And whether a war game is fun has nothing to do with whether war is fun.

Words are placeholders for concepts generally. The difference between using "fun" with Six Days in Fallujah and "fun" with Pac-Man is not a matter of the experience, but expedience.

Moral hazard.