For that matter, nothing much stops me from carving out my own little world where I can clean up what mess it is, and live there. But to do that I'd have to admit to myself that I can't change the greater world and even acknowledge that there's no real point in wanting that other than to chase high status among our monkey tribe.
Do you though? Can't we believe that change is possible, but also choose not to act on it? Not saying that's right or wrong, just that it's possible.