@gameragodzilla Oversimplified, but not too far off: Shared mission is a huge part of bonding/belonging. The thing is that actual missions come with performance requirements, and the possibility of failure. Plain old tribalism gives roughly the same feeling of importance and belonging without any of that overhead.
@gameragodzilla People who feel insecure enough often resort to tribalism because it doesn't involve risk of failure, or a need to do right by others. It feels easier, and safer to those who haven't reached a certain level of functionality. And you know what?
In a world where humans are below a certain level of functionality, blind tribalism is an adaptive strategy. That's the trap. Spend enough time around dysfunctional people and it looks good for good reason.