@LuisDantas - I appreciate your reply because it helps me process it all a bit differently. It seems you are of the opinion that we can have knowledge based on evidence or lack thereof, as to whether a deity exists or not.
You're welcome, and correct. But more significant than that IMO is that it is often possible to also determine whether how much, if at all, a given deity's existence is important and/or ambiguous - and to me at least the evidence suggests that often if not always the answers depend on the believer, not on the deity.
So, in short, a deity's existence seems to be exactly as important as people want to believe it to be, and possibly no more than that.
I'm reading between the lines a little. I'd say that it doesn't matter if a deity exists or not. Having to know, needing to know...doesn't interest me as it did when I was a theist. Maybe agnosticism is unnecessary then, you're saying? (in other words)
On the contrary. Agnosticism is very much necessary - and one of the logical pillars of political secularism, which I greatly value. It just isn't very significant from a personal perspective for most people, to the point that many atheists tend to disregard it as "uncommited atheism".
I suspect that most people are literally incapable of sustaining a consistent agnostic perspective. Our brains and mental processes are not well suited to confortably maintain doubt.
But beyond that, I also think that while impossible to prove wrong, a true agnostic stance is not particularly crucial in any practical sense. There is considerable anthropological evidence that beliefs about deities existence are actually fairly malleable and maintained to a large measure by social reinforcement (Christian anthropologists often find themselves effectively suspending their disbeliefs of local myths for the duration of their missions).
I am personally convinced that, perhaps counter-intuitively, it is in fact not at all important to know whether any literal gods exist. All practical aspects of the matter seem to be connected not to the matter of their existence proper but rather to what the beliefs regarding them are.