Harry Potter not the brightest wizard

Dear Harry Potter, while I respect your claims to be the chosen one without ever really seeing (or reading) evidence to prove this (instead we just get told repeatedly. Ah well, all hype and that), and admire your ability to foil villains plans by basically overhearing them while wandering around in the dark, there is one thing I cannot respect. Your decision to ignore that you had a proven, working time travel device (see your adventures with the Prisoner Of Azkaban) and let hundreds (if not thousands) die over the subsequent years, including close friends, when you could have easily saved them is pretty poor. Screw you Harry Potter.