It’s very difficult to pull off a movie virtually solo, but Clooney does that. It’s a character most movie goers will struggle with, there’s no irony or fast patter or comedic wit. He’s sick and facing death on his own terms alone, no pandering or any inclination to sweetness. I imagine this performance is very much like a man in the same position would act. So, grow up critics, unless realism isn’t your thing.