Why don't the children of politicians have real jobs?

Senator Biden's son, Beau Biden, is running for Statewide office in Delaware. Bob Taft, a member of an illustrious Ohio family, is the first Ohio governor ever indicted (or perhaps ever caught). Then there's Patrick Kennedy, son of Ted, and never considered the sharpest knife in the drawer, his loathsome cousin Robert Jr, and Kathleen Kennedy Townsend, whose political career was terminated by the voters. Jeb Bush and the Georges, 41 and 43. The Governors Brown, pere et fils, of California. And countless others.

I dread the day when we have to decide between Chelsea Clinton or Jenna (or Barbara) Bush for President.

Why can't any of these people go manage Halliburton?