Atheism is a religion, like bald is a haircut and abstinence is a sex position, makes perfect sense. A religion requires a certain core of beliefs and dogmas, rules, orientations and positions that all members ought to respect. Atheism is merely the lack of belief in god or the belief that gods do not exist, it's not a religion since it has zero dogmas, zero books with rules, zero common beliefs. The only think atheists can have in common is at least the lack of belief in gods, but even there some will be gnostic others agnostic, so it's not a really common trait.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you