There's atheist "churches" popping up these days, even.
I dig the perspective you posted here, because if I were an atheist, I would think conversations about God would be asinine and superfluous. To me, it'd seem like a waste of time. I would think it'd be akin to disproving the tooth fairy, or a unicorn, or some such. Why spend so much time considering, arguing, and talking about something you have no belief in? It'd be like entertaining the idea that middle earth is around somewhere, and I was somehow obligated to disprove elves and hobbits weren't out there somewhere. Really?
I think (honestly due to my own theological bias mind you) people are hung up on it because there is a void in their heart concerning this stuff. Existence, God, who, why, when, where. My brethren often say atheists are just as religious, which is rather antagonizing (but I get the point; some really are). It's more like "religion without divinity" or religion without a god or gods. Similarly why there are conventions, why there are meetings now that they happen to call church (to be tongue in cheek, most likely), best selling novels, authors, bloggers, youtube channels (cult of dusty is hilarious btw), etc. It's like it's own cultural phenom.
It is, in a way, like a new religion, or church, or... lack of a better way to frame it, movement.
I talked to, what I'd consider, a bonafied atheist about the concept of atheist church and he was rather befuddled, but agreed the whole hanging out with people of similar like-mindedness is a cool concept. It's like all the things religions have are kind of cool, socially, but unnecessary for those who literally have no believe about the divine or a higher power.
But I consider him rare. He's not like most atheists I encounter at all.
It's an us-against-them mindset, ultimately. But going back to what I said about the void in one's heart... there is a clear distinction between god-deniers and people who genuinely are atheist (like my aforementioned friend). The guy just doesn't get it. He just shrugs and says he has no reason to believe, maybe if there were proof of anything at all, he might consider it. But he just doesn't see it, so, what's the point? He can't make fiction be reality, so he doesn't seem interested in trying. He's literally an uncrackable shell in that regard. He's just an atheist.
On the other hand, the people I try to talk to like I do with him have more fire and brimstone in their eyes than the most die hard evangelical I've experienced. Maybe not Westboro hatred, but not very far from it.
And that really just makes me wonder.