Theists: What is the most compelling argument you have heard for Atheism?

[Harry Nevis]

The best reason for atheism is the refusal to take on faith unsupported claims which are farfetched and/or absurd on the face of it.  One does not argue their way to atheism, one merely refrains from embracing theism and other crazy sounding beliefs without good reason.

People have different opinions about what is far-fetched or absurd do they not? I find the Dawkins's notion that we are "biological robots in a meaningless universe" and Dennett/Churchland's assertions about consciousness being an illusion - both of those - absurd. I also find the notion that facts about nature can supply any kind of moral values far-fetched. And those are just the start of a whole host of conclusions that I see as ridiculous responses to the human condition. The idea of an intelligent self-sustaining ground of being seems far less implausible to me.

Different opinions?  Of course.  But saying there is no supportive, objective evidence for the god of the bible is a fact, not an opinion.

I don't see nature as providing moral values.  That's what society does.