Swedes - you may have missed when I said above that if people believe in god 'because you "feel" it or think there "must be something out there", as a lot of people do, then fine - I think we can agree we are coming from totally different places, will never agree, and can move on.'
Threadworm, I appreciate your analogies, but I don't think they work. The chemical analysis of paint is indeed irrelevant to the appreciation of art - but that's because nobody is doubting the existence of the painting, for one thing.
I also feel there is often a false equivalence being made between "the evidence that something exists" and "the lack of evidence that it doesn't". The two are weighed against each other in arguments as if they cancel each other out on the scales and should lead to a default position of "we can't know." But they don't. If you want to assert the existence of something positively - a god, a demon, crystal healing, the Easter Bunny - you need to provide some kind of objective indication that it exists, otherwise you could make up any old rubbish. As David Icke and L Ron Hubbard have done. There has to be an understanding that people won't just take it on trust, which is why most people see through these two charlatans and others.
I can't provide evidence that God doesn't exist, that's true - but that's not my role. I can't provide evidence that the Loch Ness Monster, the Easter Bunny, Father Christmas, leprechauns, Thetans and the Invisible Levitating Pink Dragon don't exist either. But somewhere along the line, there is a sensible grown-up consensus on the grounds of likelihood that these mythical things "probably" don't. I'm genuinely interested in how and why we reach that sensible grown-up consensus, and what prevents us reaching a similar one about god(s)?