Atheists are infamous for declaring that the idea of God is a man-made invention. Knowing what we know from science however, it's the non-existence of God that's the more likely invention. It is more likely that it's people who are terrified and weak and needy, people who are too pride filled and arrogant to follow His laws who decided to ignore the obvious – Creator God exists.
As it turns out, atheism is a crutch for those who cannot tolerate the reality of Creator God's existence. As George MacDonald wrote, “How often we look upon God as our last and feeblest resource! We go to Him because we have nowhere else to go. And then we learn that the storms of life have driven us, not upon the rocks, but into the only real haven.”