Unfortunately for Pope Benedict, it’s his history of being second guessed on his motives. I think probably we can take it at face value that he felt he simply did not have the energy to carry out the role of pope in the modern age. … There are many frustrations in Benedict’s career as pope that he probably feels quite deeply because, I think, he’s a sensitive man. He feels the hurt deeply when someone betrays him and he feels the hurt deeply when he’s criticized.
Image of Pope Benedict XVI from 2010 via the Catholic Church/Flickr