I return to this idea, which may not be liked by some theologian. I am not a theologian, but I think that the emeritus-pope is not an exception. But after many centuries he is the first emeritus. Let us think about what he said, I have got old, I do not have the strength. It was a beautiful gesture of nobility, of humility and courage.
But if one thinks that 70 years ago emeritus bishops also were an exception. They did not exist, but today emeritus bishops are an institution.
I think that the emeritus pope is already an institution because our life gets longer and at a certain age there isn’t the capacity to govern well because the body gets tired, and maybe one’s health is good but there isn’t the capacity to carry forward all the problems of a government like that of the church. I think that Pope Benedict made this gesture of emeritus popes. May, as I said before, some theologian may say this is not right, but I think this way. The centuries will tell us if this so or not. Let’s see.
But you could say to me, if you at some time felt you could not go forward, I would do the same! I would do the same. I would pray, but I would do the same. He [Benedict] opened a door that is institutional, not exceptional. Source here