I've never heard a compelling argument for or against. There's no evidence, either way (unless you count the mountains of anecdotal evidence in favor, but you just handily pointed out the problem with that.
). We can't even agree on what "God"
means!
I personally think there are ways of looking at the issue that certainly suggest (IMO) that God is at least irrelevant:
- non-theistic worldviews and mental models can have very good agreement with the world and what we observe.
Note: I recognize that theists will probably say the same thing about their mental models of the world. However, if changing an initially assumed factor (e.g. the existence of God) doesn't make the model any better or worse, then we can safely say that this factor can be ignored because it doesn't affect what we observe.
- IMO, there are good arguments against the idea that humanity has
knowledge of God .
These two points exclude most of the popular conceptions of god(s). All that's left is some concept of god that has zero or negligible effect on anything we observe and that humanity has no knowledge of. Could such an entity, if it exists, be rightly called a "god"? Not by my definition of "god", but I suppose by some definitions of the word, it might be. But does such a "god" matter to us? Not at all.
As for the evidence you mention, I personally do take
some stock in it... like the old joke goes, the plural of "anecdote" is "data".
It is evidence for something... but evidence for what? Just because people attribute various experiences to god(s) doesn't mean that they're correct (or even necessarily justified) in doing so.