Opinion

There's one thing that negates reason or simple common sense in a mind, the desire to live by the mental and physical work of others.  To have power over people and to specifically have power over those who perform productive thought and labor.  Of course there're no rational grounds for it.  It's the desire by the rulers and those seeking to become rulers to control then use the lives of other people that drove the Human Race into the world wars with other horrors.