* '''Negative experiences with [[theism|theists]]'''
* '''Negative experiences with [[theism|theists]]'''
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* '''The advance of scientific knowledge:''' ''Science has in many ways become a new God''. <ref>[http://www.geocities.com/skepticsweb/psychology.htm Why Atheism?]</ref>
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* '''[[Scientism]]:''' ''Science has in many ways become a new God''. <ref>[http://www.geocities.com/skepticsweb/psychology.htm Why Atheism?]</ref>