Suffering from a bad heart, emphysema, glaucoma, and deafness, Thurgood Marshall finally retired from the Supreme Court at the age of 82 in spite of having always claimed "I was appointed to a life term, and I intend to serve it." Many observers felt he should have left much earlier. Life appointments make Supreme Court justices among the most powerful officials in government and allow even dysfunctional judges to stay on long after they...