The nihilist looks around at everything and comes to terms with what seems to be obvious. The sun is one tiny dying star in an enormous universe. One day the sun will burn out or explode, destroying us all. The earth is a molten rock that could either be blown up by nuclear weapons or an erratic comet. We are one of the seven billion nameless faceless ones currently living on this rock. What does our existence matter to this rock floating around a dying star within the expanse of an enormous universe? Not much.