Iron man is gentle to everyone except himself. Obviously, I have tried my best to lose my life, but I still don't think I have done enough. His father spent his whole life looking for you, missed his first circuit board, the first robot, and missed all his childhood. The happiest time for him was to send him to boarding school. But when you see the truth of the assassination, you don't move at all. You beat his son to death with the shield he made. You're too scared.