> I think heirarchy is a natural human inclination. It's observed in every part of the animal kingdom.

I have two main objections to this line of thinking:

1. Even if a tendency or behavior can occur in "nature", that doesn't necessarily make it correct. By that measure murder, infanticide, rape etc. should also be considered acceptable since they occur in nature (both with humans and animals).

2. If you take a look at smth like The World Until Yesterday or other similar work it will become apparent that the kind of large scale hierarchies of power present in the modern world are relatively recent constructions. To me they're more a hallmark of contingency and deliberate human choices, not of "nature". If we want to make a less hierarchical society we can, it's in our power to change the design of society (to a significant extent at least).