To me, at this point, the most important thing is: reality. Since I live in a civilization, and in civilization something is only "real" if people agree it is so, I must modify this to include my fellow citizens actually recognizing this reality: The best thing in the world would be a sane human world, well-adapted to nature and not opposed to it in some paranoiac vision of mankind versus his environment. This realistic society would exist in contrast to the present society, which is fed on economic and social and religious illusion, and would necessarily replace it if brought about, but since society as it is fails in every significant way (although money is still being made, and there's still lots of "kwality" TV), that would be no loss. Further, most people being of a mundane nature would not recognize this society, but the loss of anyone who cannot see the importance of change toward something radically more realistic is not actually a loss; we just say "it's a loss" to make their family feel better - until we can shoot them.
All that I've read, and seen through history, points toward a feudal apolitical society as the height of humankind's adaptivity to nature; apolitical in this case means that you don't have to convince other people en masse of the truth, nor keep up image, but you take a vision couched in knowledge of an accurate adaptation to your environment, and show it to the wisest people in society, and they act on it, commanding others to do the same - even if they object, and their personal profit does not increase, nor their stature, but their workload does. Right is right, and truth is truth; this isn't to say I favor some abstract absolute to which we refer in deference in every situation, but that I think truth is found in any situation and commands action. Rubbery monster attacking city? Call out the troops - and so on.