I partly live in a b) world with townspeople all around me running and taking part in drama, sports, political, gardening or many other clubs. They don't do it for money. They do it because they support the society in which they live. They like living.

It may be that doing something altruistically is irrational. But it could be described as angelic. But better described as putting smiles on other peoples faces.

c) could work for the same reason that people do other altrusitic thngs such as taking part in the non-work part of society, as above. People see such actvities as social maintenance. I see know reason why environmental maintenance could not become equally important.

However, this is a Finnish experience. Finland reminds me of England when I was a kid. Nature is all around. People are naturally 'good' - a sort of pragmatic Lutheranism. It may not be like this where you are. In Finland, experience proves that it IS possible.

You can't be me, I'm taken