I'm an atheist. I have no fear of judgemnt day.
"Do unto others as you would have them do unto you" says NOTHING about god.
If god-based morality is superior, why is it so ineffective?
The phrase "having a form of godly devotion but proving false to its power" is an indictment of the majority of "god-fearing" people of the world.
I agree with Ayn Rand that informed self-interest is a perfect foundation for morality.