Failed at what? Also, I take contention with your view that it was Christianity that 'gifted' Atheism. Science and improvements in the overall living standards of the population gifted us Atheism as people found that they weren't suffered with the hand given to them as much. https://twitter.com/Ahimsa_Satya_/status/976796831702306816 …
In addition the Christian focus on contemplation and monotheism honed the human mind to be able to do the technical work necessary for modern science.