It’s not enough just to reject the existence of gods if one ends up embracing nihilism.
“Atheism means only that one does not believe in god; it does not mean that one embraces reason… Far more important than whether someone rejects religion, is whether someone embraces reason—thinking grounded in observation of reality.”
- Ari Armstrong, “Atheism Rises in U.S.—But What About Reason?”
Ayn Rand makes the case that reason, rather than faith, should be one's moral absolute:
Yet the irreligious left are now attacking Rand for for her atheism (something the right typically does). Odd, reckons Ari Armstrong--“but Rand's positive philosophy of evidence-based reason and this-world values deserves a closer look,” he says.