Been waiting for this movie for too long. Joaquin Phoenix was made for this role. He is the miserable, sad, angry clown that doesn't care anymore. So gaunt and haunted by demons that he can't identify or destroy, he has nowhere to go but down.
His entire existence is somewhere between pain and nothingness. It all makes sense that he would become the Clown Prince of Chaos.
Well written, great acting and music to create the atmosphere of insanity in Joker's head, I thoroughly enjoyed it.