Ok but imagine every other Hogwarts student finding out each year why the Defense against the dark arts teacher has left.
"Harry Potter kiLLED HIM WITH HIS BARE HANDS?"
"Harry Potter erASED HIS ENTIRE MEMORY?"
"Harry Potter let hiM TURN INTO A WEREWOLF?"
"Harry Potter disCOVERED HIM IN CHEST??"
"Harry Potter let heR GET CAPTURED BY CENTAURS?"
I learned that it was in hard times that people usually changed the course of their life; in good times, they frequently only talked about change. Hard times forced them to overcome the doubts that normally gave them pause. It surprised me how often we hold ourselves back until we have no choice.