I read somewhere that one of the developers, while playtesting with invincibility on and mowing down hordes of mere virtual-mortals, would moan like this because he thought that was what a God would sound like so they put it in the game.
Gods get bored. When they get bored, they yawn. The slaughter inflicted by the ROTT god would be boring, after a while. Imagine doing it for an eternity.