My exasperated family is used to it: I just hate a movie that ends poorly.For eight seasons of “Game Of Thrones,” I was glued to the suspense-packed, gory and maddeningly paced struggle for the Iron Throne. The winner was abruptly picked in a goofy, hugely disappointing five-minute tea party.“Breaking Bad” veered off into a pretty bad break. “Big Little Lies” turned out not to have any real lie.I never understood why Sally suddenly got so mad at Harry.A bad ending reveals that the …