1) Fear of Change aka Fear of Success aka Homeostasis aka Self Sabotage.
2)Ego Attraction to perceived sophistication aka (over complication, aversion to simplicity)
3) The Emotional then Mental Effects of the Loss Aversion Bias
4) The Emotional and Mental effects of Being Wrong + Loosing Money
5) Looking for a system that beats the markets instead of looking for a system to beat themselves. We project our internal conflicts to the markets avoiding the real level of the problem in a subconcious coup d'etat to perserve homeostasis in a subconcious level, while in the conscious completely unaware.