This is a great post and outlines many deep and interesting questions to consider. Humans and our inherent psychology are a fascinating, beautiful, yet sometimes scary lot. There is so much that goes into it, but I do feel a lot has to do with conditioning/examples we are constantly exposed to. Especially when we start talking about things which go 'against the grain' of life and the balance/equilibrium all things seek to achieve.
I look forward to reading more of the topics on your list! Keep um coming :)
RE: The need for greed and the domination dilemma : my pondering begins