Continually debating people and never winning
If your view of the world is that people use reason for their important decisions, you are setting yourself up for a life of frustration and confusion. You’ll find yourself continually debating people and never winning except in your own mind. Few things are as destructive and limiting as a worldview that assumes people are mostly rational.
— Scott Adams, 2014
From the book How to Fail at Almost Everything and Still Win Big: Kind of the Story of My Life