That's funny--I was just thinking earlier about how ridiculous the concept of being obliged to let elected officials serve out their terms is, despite their performance. (Why can't we tell these people to get out now?) And then I compared them in my head to a pathogen invading the body, and the immune system kinda sitting there, shrugging its shoulders, and saying, "Let's see how this plays out. If it's not better in a couple months, we'll kick them out. But we have to give them a chance."
Another analogy: imagine a company hiring a bunch of employees all at once, who turn out to be terrible--they show up late, are rude, are incompetent, and pee all over the office. But, because of some arcane law, the company has to sit by and watch it all go down, because the employees are locked in for two years.