#1 The biggest mistake is to try to disprove atheism by saying that we can't prove everything. For me, that's the whole point of atheism....admitting we don't know everything. That's my absolute favorite part.
I really wasn't trying, it was merely a wondering.

The good thing about not knowing something is the opportunity to have fun speculating, and maybe even finding out.

I assume you've opted for atheism (rather than "agnosticism") as your description because the evidence and experience you've seen/had so far leads you to work and live with the theory that there is no god and likely no possibility of one? Do you still find it hypothetically possible there's a God?
I'm in a similar position in that I'd be the first to admit how limited knowledge and language are, yet obviously I've reached a different working theory and will work with the theory that there is a God. I find it possible (though highly unlikely) that there's no God.
I'm wondering now if being open to the opposite possibility is what makes some people more capable of having sensible and interesting discussions about beliefs and belief than others.
#2 Evolutionary biology is in it's wee stages. Why do we have a sense of aesthetics? Possibly to find places that are safer. We tend to not find big crowds beautiful, and big crowds are where you are going to find diseases and whatnot. If our brains are not attracted to large crowds, we will try to avoid them, and hence we stay safer.
It certainly is, which is why I feel free to speculate and get all metaphysical about it.


I dunno, coz I can think of many types of occasions in which humans find big crowds comforting and a safe place to be. Football matches is the one that springs to mind, and concerts.
I'm wondering now if perhaps aesthetics is a development of the good to eat/bad to eat discernment that most animals seem to have?