We're talking about the Supreme Court. Even Bush's nominees averaged about two months.
Plenty of time.
Bush never nominated extremists either, as Obama has.
Reagan was a totally different story. Robert Bork for example. Bork was suggested before the process began. Democrats said no. Reagan nominated him anyway. They rejected him. Most of the time, presidents just want to fill the position, not have a long drawn out fight.
The Clarence Thomas hearings turned into a sexual-harassment circus. A total disgrace chaired by Sen Joe Biden. That was abnormal. I would love to see Obama's nominees stand up to that kind of harassment by Republicans. But I don't expect them to act so shitty.
However, since Obama doesn't like working with Congress, and regularly goes around them, I don't see why we need to keep with the average time, maybe a rejection or two are in order.. He deserves the same consideration he used to force Obamacare down our throats. None.