What a great comment. It made me stop and think.

I think a purely rational life would be not very enjoyable. However, we definitely need some rationality, especially now that most of us are part of a community of many millions of people. We will destroy ourselves unless we keep some of those lizard brain emotions at bay. The enlightenment was a good thing.

For a totally random example, say one has to make a decision about getting a vaccine. It is a good idea to be as rational as possible about that decision.