The biggest flaw in athiesm is pride...You will never meet a humble athiest...
Hubris and cynicism is what drives most of them...
But I don't think they are inherently evil or amoral...
u will NEVER meet a 'humble' religious person
the fact one believes a deity create them into his image & gives them reigns over every living / non living thing on this planet is the polar opposition of your word 'humble'
i never heard of an arragant non beliver / agnostic ... the fact we support science shows humility