If people were 100% rational, would the world be better?

[Angrboda]

Emotions are directed towards goals. Most people can agree on the top of the pyramid, staying alive, but from there the goals diversify like lines in a branching story. At the bottom, where goals are implemented, the variety of aims and purposes representing the top-level goal are so varied, that all you can say is that whatever a healthy brain wants, that's appropriate to the goal. If rational means simply having a reason, then all these bottom-level wants become rational as they are all reasons justified by the legitimate top-level goal. In that case, rational becomes so dependent on subjectivity as to be empty.