<Snipped quote by Etcetera>
Perhaps those are the blessed dimensions, those who do not exist on a very thin floating line between utter chaos and barely managing to contain itself from the rest.
In fact i would bring the argument, that that is NOT the case for the vast majority of worlds. From my experience. So many worlds just perish because they are taken over by those who are of darkness like that.
But i can see your point too. Sadly i cannot say, across the many eternities of existence and surveying multiverses and universes come and go, many succumbed to avarice, selfishness, apathy, and usually that killed them in the end.
Balance, or for that matter, goodness, is the responsibility of those in power who have the responsibility to be bearers of light onto worlds, to burn away the darkness.
I can hardly presume what ought or not ought be as it pertains to the natural order. But I can tell you what I've observed. Dimensions are small enough that the weak can afford to gather and oppose the strong. That isn't to say the weak or strong are good or evil, but in broader Existence, there are few who are truly weak, and fewer still who can gather to create an entity stronger still. And thus the expanse protects itself from imbalance, for it resists shifting of the scales by overwhelming them with void.
*Clears my throat*
Sorry, I got a bit carried away.