Tribalism is human nature. It's not rational. In a tribe, being rejected is pretty much a death sentence, so I can see why humans have a strong motivation to

Tribalism is human nature. It's not rational. In a tribe, being rejected is pretty much a death sentence, so I can see why humans have a strong motivation to be in one. It turns irrational when that tribe is coke vs pepsi, xbox vs playstation, vim vs emacs, etc.