Cure? It's a part of humanity. Do we want to cure humanity?
I think that attempting to suppress or deny our natural instincts causes more problems than it solves.
I think we should try and embrace it in a healthy way. Actual team sports is one example.
It's not a desirable trait in politics, but learning to cope with it is likely to be more realistic than eliminating it.
When people think all sex is wrong, pedophilia, sadism, and rapes rise.
When people think all violence is wrong, gang violence, mass-shootings, and other behavioral disorders rise.
All things in moderation. More playground fights will result in less playground shootings.
More priest sex will result in less priest rape.
Suppression of our nature only twists it. Humanity needs treatment, not a cure.
At some point I think I crossed a line from having a point to rambling, so I'm gonna stop now.
Since the dawn of man, tribalism. We still haven't found a cure for it, probably never will.