Why aren't smart people happier?
The smarter people see the truth of the world and the universe. If the truth was good, that we lived in a wonderful society with wonderful people in a universe that cares about us, smart people would be so happy.But being smart just means you know the awful reality of things. Congrats, you learned about all these awful things you can’t do much to fix, and the reward is you get to experience existential dread. Congrats, you have learned the history of humanity and how our society functions, and your reward is you get to be angry at the vast amount of injustice.