(A pleasure trip).
I can't believe in science fiction or fairy tales because they are fiction by definition. I think the question is not well posed.
(...)
And yet -- as I was saying to ynot just now -- SF, especially hard SF (but occasionally out and out romances as well) sometimes contains elements that are closely modeled on reality, or on what reality might plausibly look like in future. You sometimes get SF written by knowledgeable writers, sometimes people who're well trained in science themselves, and who're deliberately going for verisimilitude, so that much of what they describe is "true", and it would be foolish to dismiss them merely because you found these descriptions in a book of SF.
My point is, the God question is so vast, and includes so many different variations (some of which are plain wrong, without a shadow of a doubt ; some that are wholly unfalsifiable, so that rather than go into right or wrong one dismisses them in the absence of compelling evidence ; and some that well might contain elements of truth. Like SF, to dismiss "God" (that blanket idea) would be foolish, especially when one does not know what is being discussed.
Of course, this is provided these intricacies are of interest to you. Just like football intricacies are of interest to the football aficionado, while they're no more than sweaty men in children's clothes running after a ball for those who're not ; similarly, if these intricacies don't hold your interest, and if precision is not important to you, then sure, simply saying you don't believe in God (and in SF) is just fine.
Which is why I raised the SF analogy. To the extent you can, with reason, dismiss SF in general, to that extent and to that level of precision it would be reasonable to dismiss the God question in general as well.
(And incidentally : I take care to usually say "the God question" rather than simply God, because some elements of the God question do not posit God at all, and yet are wholly religious and Woo-ridden.)
In the existence of gods, unicorns, fairies and other extraterrestrial beings, no. Nego. Scepticism would be too much like credulity.
And here I agree fully with you. Certainly about the unicorns, faeries, and extra-terrestrials ; and also about gods, if by “gods” you mean, for instance, the Yahweh-God and/or the Allah-God and/or the Indra-God an/or the Zeus-God, et cetera.