Even in a gleefully negative comic there is optimism although it's slightly hidden: It comes out through a comic character's sheer tenacity. He keeps going and trying to find some sort of fulfillment regardless of his perpetual failure record. That's a form of hope a form of optimism. Really hokey I know but it's true.
The nature of catastrophe is after all reasonably unvarying in the way it ruins destroys wounds and devastates. But if something can be learned from the event - not least something as profound as the theory of plate tectonics - then it somehow puts the ruination into a much more positive light.