Does it make any sense to ask what is the case for atheism?

[Angrboda]

From the viewpoint of epistemology, perhaps. But socially, I think Chad has a point. You may not need to explain or justify the lack of belief, but I think the event itself, you being different than others of your social group, seems to beg for explanation, even if the position itself is not in need of justification. Granted, some of those explanations are mundane (I grew up in an atheist household, etc), or not friendly to the theist point of view (I saw through all the bullshit). I wonder, if, perhaps, sometimes theists are simply looking to confirm their group's mythology concerning why people become/are atheists (desire to sin, bad emotional experience); atheists do the same in attempting to explain conversion to a religion. It's worth bearing in mind that the "mythology" surrounding why atheists do what they do is there for a purpose, both psychologically and politically, so there is likely to be great reluctance expressed towards relinquishing it.