It's an epidemic. It's not Ebola, or Nile virus, or Dengue fever, or polio, or SARS or Legionnaires disease. The epidemic I'm referring to is having to be right.
Most people like to be right. Having to being right is the most important way the ego is satisfied. It doesn't matter if other people are hurt, maimed or killed in the act of having to be right. Being right feels good and no one is going to take that away from you. Long live your ego!