Atheism is as much a religion as health is a disease. Atheism is science Atheist philosophy is science philosophy. Atheists know that everything that exists and happens in this universe is physics. Stars and planets, chemistry, biology, life and even human consciousness and behavior is all physics, so the only methodology capable of informing us as to the nature of reality is science. It is the only intelligent method of sorting out fact from fiction, truth from fallacy, reality from myth.
Science keeps humanity out of the dark ages.
It keeps us from paranoid panic every time there is a solar or lunar eclipse or a lightning strike. It keeps us from running around casting spells on each other or burning people at the stake or throwing people into ponds to see if they float. No myths, legends, fantasies, superstitions, fairy tales, just the facts. Science is a method of discovering the truth, religions claim to already have the truth. Atheism is fact like evolution is fact.