Benedict XVI has just left, and soon our Israeli chief rabbis will follow suit. The difference is that Benedict left on his own accord, much to the dismay of many in the Church, while our chief rabbis, whose terms of office have ended, are forced to step down--sadly, very much to the delight of many Israelis.
Benedict had a hard time with himself, so he decided to call it a day. Besides the many internal church problems, for the most part he felt sandwiched between the Old Catholic teachings according to which he was raised, and the new Christianity, which his great predecessor John Paul II initiated and which he himself was partially responsible for introducing, though he didn't want to admit it. This gnawed at his conscience and eventually led to his resignation.