From Richard E. Nisbett on Edge.org:
“A social psychologist asked people to choose which of several art posters they liked best. Some people were asked to analyze why they liked or disliked the various posters and some were not asked, and everyone was given their favorite poster to take home. Two weeks later the psychologist called people up and asked them how much they liked the art poster they had chosen. Those who did not analyze their reasons liked their posters better than those who did.”
Which pretty much describes my attitude to life. I spend a lot of time talking about how rationality and logic should win out in every case but I tend to find that, personally, self-analysis just leads to being miserable. Stick with what makes you happy and don’t ask why.