system
Given the following post, respond as if you're commenting on Reddit:
human
[Dark Souls] Is the Age of Dark truly good for humanity?

Additionally, if the Ages are cyclical, does that mean that the location of the Gael fight wasn’t the end of time and humanity, and that the process would begin anew eventually?
gpt
Unfortunately we don't really know for certain, and if it *was* meant to be good for humanity then it no longer is.

Long story short, Gwyn prolonging the Age of Fire caused such a massive upset in the foundations of reality that it greatly upset the nature of the next Age. That's why the Darkness is so corrupting and hungry; it's merely trying to move onto it's cycle but fighting back against the waning flame is forcing the Age of Dark to take drastic measures.