Get used to the fact that man is smart enough to know the benefits of working together to remain dominant because otherwise you would be right about middle of the food chain.
If we had not learned to work together we wouldn't even be able to discuss humanity because our life expectancy wouldn't be very high, we would have no technology and the chances are we would be extinct.
A large part of being human is the ability to adapt to any situation and the intelligence to realise that in certain situations it's good to have someone to watch your back.
The urge to be top dog dominates a large section of the human race and is the reason that individuals and even countries wish to be regarded as the big Kahuna , it's as natural as pissing.
The bigger your gang and the more weapons you can front the more clout you have..
Any tribe has rules , if a member transgresses they face being expelled and losing the protection afforded by being "one of the boys".
We like to think we are extremely complex creatures , I don't think so.

We make our lives complicated .