To me its clear that scarcity is the main problem, maybe even the only problem. its been here for 4 billion years long before money politics or religion. this is the state of nature.
it goes something like this: Nature is prolific, there are many more creatures who are born that can possibly survive given the amount of resources. so they compete over the scarce resources in order to survive and reproduce, resulting in war.
Nature is also brutal and cruel... all organisms fight within their own species, with other species and with natural catastrophes. human civilization has been able to mitigate this brutality to some extent, that's why we have it relatively easy compared to animals, but on the other hand
we also created artificial scarcity that exacerbate the problem.
For the first time in history we now have the chance to tackle this problem seriously. what we need to do as a species is to reduce scarcity and create abundance as much as we can through technological innovation. dealing with religion, ideology or politics is a waste of time and energy in my opinion.