War .... any war ... and why countries would rather invest millions, billions and trillions on war machines and weapons that could literally kill us all, rather than try to figure out more peaceful solutions.
Agreed. You are really referring to the fact that so many now belong to some kind of hive. They no longer think for themselves. And since being a member of a specific hive gives their life meaning, they defend it against anything or anyone that disagrees with it. I'd bet that I would have points of agreement with 99% of all posters and commenters if everyone just thought for themselves
Basic self-consistency, particularly in Anglo countries. The culture seems to teach that it would be better to die than to recognize one's own irrationality, correct it, and move on.