When you ask people why they do or do not like things, they must then translate something from a deep, emotion, primal part of their psyche into the language of the higher, logical, rational world of words and sentences and paragraphs. Also, when you attempt to justify your decisions or emotional attachments, you start worrying about what your explanation says about you as a person.Read more in "You are not so smart: the perils of self-delusion".
Thanks, +Joe Buser
