People just hate the idea of losing. Any loss, even a small one, is just so terrible to contemplate that they compensate by buying insurance, including totally absurd policies like air travel.

One of the problems with expertise is that people have it in some domains and not in others.

Mental effort, I would argue, is relatively rare. Most of the time we coast.

Hindsight bias makes surprises vanish.

You are more likely to learn something by finding surprises in your own behavior than by hearing surprising facts about people in general.

People who are cognitively busy are also more likely to make selfish choices, use sexist language, and make superficial judgments in social situations.

Except for some effects that I attribute mostly to age, my intuitive thinking is just as prone to overconfidence, extreme predictions, and the planning fallacy as it was before I made a study of these issues.