People deliberately avoid information that threatens their happiness

Carnegie Mellon University

People deliberately avoid information that threatens their happiness and wellbeing. Researchers show that, while a simple failure to obtain information is the most clear-cut case of 'information avoidance,'They are also remarkably good at selectively directing their attention to information that affirms what they believe or that reflects favorably upon them, and at forgetting information they wish were not true.
http://www.cmu.edu/news/stories/archives/2017/march/information-avoidance.html
A very interesting read ........