In the age before the Empire, Godbeasts were often the most terrifying beings that any settlement would fear, and hope to never cross the path of.
Although these beings had high intelligence, they liked to treat humans as either prey or playthings. Even though it was true that humans were some of the worst possible food they could find- full of bones and with a pitiful amount of flesh that wouldn't even count as a snack, they were still targeted by a few terrifying races of Godbeasts for multiple reasons.
Some said that it was because they did not like seeing them grow powerful, and wished to squash them before they reached enough of a level of power to challenge them.
Others stated that they liked to see the expressions of fear, as humans had some of the most expressive faces.
And still others…simply said that it was to have fun.
Either way, when the war came, it was welcomed and supported by almost all of humanity.