Good satire comes from anger. It comes from a sense of injustice that there are wrongs in the world that need to be fixed. And what better place to get that well of venom and outrage boiling than a newsroom because you're on the front lines.
In general mankind since the improvement of cookery eats twice as much as nature requires.
Wit - the salt with which the American humorist spoils his intellectual cookery by leaving it out.