...does being smart lead to a more stressful life? Realizing how much you still don't understand
Thus one learns the need to delegate tasks, respect folks in their field of expertise (though perhaps not further), and do your own research when you have a need for specific knowledge on something.It strikes me as a rather adult thing to learn and accept your limitations, and how to accomplish what needs doing despite your limited capacity and knowledge.
, grasping the bad state of some things in world,
Here one should learn history to gain some perspective. Currently, I'm reading a biography of Winston Churchill, and I find myself astounded at how duplicitous, weak, and downright willfully ignorant Chamberlain's government was in the run up to World War 2. I think little of our current political leaders; it's heartening to know the free world has lived through worse. This, of course, applies to any human field one might become despondent about.
feeling the general existential pain and philosophizing things, and so on.
You're here. If you're not gonna put that pistol in your mouth and pull the trigger, you might as well do something with your time here. Get moving.
In any standardized intelligence test, I always scored north of the 95% percentile. In my travels, I've learned that intelligence alone accounts for little- your attitudes, habits, moral standards, and fortitude count tremendously, and your intellect might be best applied to improving your character in those other fields.
You, I think, have reinforced that point. You're smart. So what?
Take that as a challenge, not a sarcastic dismissal, and you'll do better.