Emotions are part of our makeup as humans!
Most psychologist (I know you don't like psychology) are of the opinion that humans are irrational in the sense that we make decisions base on emotions and then rationalize it in order not to appear irrational, of which I know is not always true.

Emotions have a role they play and reasoning have a role they play too. The challenge now for most people is striking the balance between the two.

Happy New year!
Warm regards!