[snickerer]

Nature is not 'build around selfishness and violence'. Any lens on nature that says this is projecting human values.

Nature is build around what works best for the survival of the individual's genetics in the current environment. That is called evolution.

You can't even project the human concept of selfishness on this. A worker ant supports its genetical survival best by sacrificing its life for the community.

To understand evolutionary developed strategies a wonderful tool is the calculation of probability. Science knows something about how to choose good strategies, and that may help us to understand 'why' evolution optimized for this and that.

In the case of groups of hunters (or many other groups), we know that cooperation is often superior to constant internal fighting. And choosing the best strategic thinker as the leader instead of the biggest bully is obviously a good idea in many scenarios. It is very reasonable that the wolves' leader selection process has optimised itself in such a direction.