Why are you quiting?
Pope B16 is not quiting, he is simply coming to terms with the reality that he has to give thanks to God just to be able to put his two feet unto the floor each motning. When one is in one’s 80’s just being ALIVE each new day is a blessing. He could be dealing with health issues and seeing Blessed JP2 suffer from ill health while still Pope may very well has haunted him and wants peace and quit in what remains with his life.
" . . . may very well has haunted him and wants peace and quit in what remains with his life."
He also may have seen people trying take advantage of JP2 being ill and having protective people around him. I'm sure there are people would try to keep some things from reaching the Pope by arguing that there's no reason to upset him and so forth. Why give someone the opportunity to try and take negative advantage of the positive human inclination to be protective of someone who is ill?