Pope Francis has died

Does anyone have any theories why his predecessor, Benedict, so shockingly resigned? (And then, according to this article, continued to live there, which was news to me).

The conventional wisdom is that Benedict was a hardline, conservative nut who had to resign for unknown reasons and was replaced by this well-loved, progressive guy. As seen in this thread, lots of people liked him and his philosophy, and his progressive take on things which always made the news, as he focused on the poor and traveled the world.

However, I've heard the conspiracy that Benedict was forced out, possibly related to his investigations into the child sex abuse scandal, maybe because he was finding important people involved. He was always very focused on the Church itself. And Francis was chosen, almost as a patsy, to end those investigations and instead be the friendly Pope out away from the Vatican.

I just always thought Benedict's resignation was surprising and there was something more to the story.

Conventional wisdom is he attempted to resign 3 times, had a stroke, and had a pacemaker all before he spent a further 8 years of his career elected as pope and then actually resigned. This all extends decades prior to his final resignation, giving the same health and desire for retirement reasons as prior attempts.

As for whether there was something more than the conventional wisdom to the story... I'm not really sure the news of his successors death is the correct thread to spawn that conversation in as it's getting to have little to do with Francis.