User blog comment:Fallen Great Grey Wolf Sif/Concerning Question About Dark Souls Morales./@comment-16047389-20140514173519

Dark Souls is one of the most morally gray games I've ever had the pleasure of playing. There are very few things in the game you could consider "evil". But you are mostly wrong about the Lords. For starters, none of them were "corrupted". The Witch and two of her daughters were devoured by the Bed of Chaos, Gwyn became hollow (or at least the equivalent) when he used his own soul as kindling for the First Flame, and Nito is just content to watch the world die. Seath may have betrayed his own kind, and you may define that as evil, but that didn't make him into the monster we see him as. He was driven mad in his pursuit of immortality and knowledge. The same thing happens to Big Hat Logan.

We're not prolonging the Age of Fire for the sake of the gods. We're prolonging it because the Age of Dark pretty much means the end of all life as we know it. Dark Souls 2 pretty much flat out tells the player that the Dark is where all humans came from, and where all life will return to once it dies. The gods did not come from the Dark as humans did, and will likely no longer exist once the Age of Fire finally ends. Thus the Age of Dark is the Age of Man. The Chosen Undead doesn't "lose". They sacrifice themselves to perpetuate the only possible way that life can continue to exist.

Nito does not control the undead. He controls the dead. In other games, skeletons may be considered undead, but in Dark Souls they are just the reanimated dead. Undead are entirely different. Rather than dying and being reanimated, they really just don't die at all (until they go hollow). Nito doesn't try and kill you until he realizes that you are there to collect his soul. You can even serve the Gravelord covenant, and all the undead in the game will still attack you regardless.