Have you not heard of the madman who lit a lamp in the bright morning and went to the marketplace crying ceaselessly, "I seek God! I seek God!" There were many among those standing there who didn't believe in God so he made them laugh. "Is God lost?" one of them said. "Has he gone astray like a child?" said another. "Or is he hiding? Has he gone on board ship and emigrated?" So they laughed and shouted to one another. The man sprang into their midst and looked daggers at them. "Where is God?" he cried. "I will tell you. We have killed him, you and I We are all his killers! But how have we done this? How could we swallow up the sea? Who gave us the sponge to wipe away the horizon? What will we do as the earth is set loose from its sun?"  Friedrich Nietzsche, 1889

Nietzsche's point was not that God does not exist, but that God has become irrelevant. Men and women may assert that God exists or that He does not, but it makes little difference either way. God is dead not because He doesn't exist, but because we live, play, procreate, govern, and die as though He doesn't.