That's because the incrementalist/socialists "Bork" them all. As SCOTUS Justices go, Roberts, Scalia, Thomas, and Alito aren't terribly bad. Kennedy is a flip-flopper and the rest are Marxists. We had a winner when Robert Bork got nominated and then the Marxists in the Senate went nuts and refused to confirm him. The moronic middle-of-the-road bi-partisan compromiser goons (Republicans) who let incrementalists (Democrats) swing our country farther and farther towards socialism
need to grow backbones and "Bork" Sotomayor, but I don't see it happening.