The saddest part in this scene is that Michael spent so much of his life comforting the very people who couldn't protect him.
It's clear how deeply he loved his mother, but many fans feel she wasn't always able to shield him from the abuse and immense pressures he faced from his childhood to the Victory Tour and even the Pepsi commercial.
Yet, lying in that hospital bed, all he could say was, "It's not your fault."