He knew. Not that I'm saying PD contributed to his decision, but I think this revelation does point to there being more to the story than we know about. It is tragic that someone so beloved by so many felt he had to terminate his own life, but I think judging Williams, his decision, and whether or not he could be saved does a massive disservice to the man. I think it is likely he left a note too, so I think it is likely some people know his final thoughts.