most metalheads i meet, are very young, and don't fully understand the REASONS as to why the world is the way it is.
and i think it's important to know this...because if you don't understand the intentions with which the people around you do what they do...then you won't be able to cause change, or have much influence on the modern world.
i think while it would certainly improve the world with some of the ideas and concepts which are important to metalheads, compatibility...or at least coming to some type of consensus with those who aren't, is vital in order to spread your own ideas, to cause the change you're seeking.
in other words: trying to create a, "metal" society is a impossibility, but that doesn't mean that you can't change it a bit towards your favor.