Comment by snarf21

I think it is more simple in that we love tribalism. A long time ago being part of a tribe had such huge benefits over going it alone that it was always worth any tradeoffs. We have a much better ability to go it alone now but we still love to belong to a group. Too often we pick a group based on a single shared belief and don't recognize all the baggage that comes along. Life is also too complicated today. It is difficult for someone to be knowledgeable in one topic let alone the 1000s that make up our society.