Well, negating the existence of any kind of god is childish, you should at least be unconclusive about it.
That's reasonable to a point. Are you also unconclusive about fairies? What about invisible pink unicorns? Where do you draw the line? Are you drawing the line in an objective way or just being amazingly prejudiced towards our own cultural traditions?
Which says nothing unless you're talking about a man-made figure and not an actual deity. I don't want to bring ignosticism in all that much but there exist an infinite number of distinct beings that, if we assume they exist, could be called gods. Showing that one of them doesn't exist (or in your case, makes more sense as a fictional character) says nothing about the crux of the matter - does some "divine" being exist? It's much more straightforward to prove that they do than they don't. To prove that there exists no gods, you need to show that nothing that could possibly match your definition of "god" could possibly exist, whereas you only need to show that there exists one being that fits your definition to show that a god can exist.
But I did bring up ignosticism. I said it was clever trolling. I just assume when people talk about "God" they are most probably thinking something really close to the Christian God. As you rightly put, "God" can mean almost *anything*, and so it's not only "unconclusive", it's borderline irrelevant to our daily lives. To that kind of "possible God" I say "derp". That's all I can say really, because everything's possible in that metaphysical sense. God can be a long-past dead demiurge that is no longer here. Or he can be a complete sadistic God who convinced a lot of folks to follow this Jesus guy and then picks everyone that does so and places them in eternal hellfire. He can be a computer nerd from an upper universe. He can be a vat where our brains are resting. And on and on and on. There's no point in all this, I even believe that all these possibilities are probably symetrical in any characteristic we can imagine.
So I scrap all of that and say, "come on when people are talking about God, they are not referring to all these possibilities, they have
something in mind". It's towards that "Something" in their minds that I call myself an atheist.
In other terms, it's proving (∀x, ~exists(x)) vs proving (∃x, exists(x)) where x is anything that could be called a god. Unless you can also show that you've exhaustively shown that all x can't exist you've failed to prove anything.
That's insane. Let me give you an alternative: I see the world around me and I see lots of people claiming there's a God. I see their evidence and it is a failure. I see evidence
against their claims, reasoning, etc. I conclude there's no such thing and move on.
Isn't that so much simpler? I don't need to engage in infinites here. I just live my finite life with the best possible conclusion I can gather given all I know. I can wander philosophically why all those infinite possibilities are insane and ridiculous and
possible in a certain point of view, but that isn't really the point.
Which I guess brings me to a place that just complicates the discussion: It's not enough to wonder if "God" exists, you need to firmly understand what "God" refers to if you're going to be wondering anything. Asking "does god exist?" analogous to asking "does a book exist?". Some people claim that the only book that exists is The Hobbit, other people claim that the lyrics to "Bohemian Raphsody" is a book, other people claim that a book doesn't exist, and some people don't really care because they don't read.
Been there done that. I said that earlier here.