This world beats to the rhythm of religion in a thousand ways, and absolutely everyone is religious — including atheists.
Religion certainly includes an idea of a God under whom man is inherently subservient, but religion also governs the belief system undergirding the way people think about, and live, their lives.
It tells them who their authority is and it informs their values and behavior. It gives them their sense of morality and goodwill, and it guides them in the way they treat themselves and others. Religion does nothing less than construct one’s view of the world.
Atheists are, in fact, some of the most religious people.