But they don't have disbelief in those Gods for the same reasons. ("I can't imagine/its not possible to not believe in God")
They have disbelief in those Gods because they believe that their particular holy book instructs them to have this disbelief.
This is why the argument fails with fundamentalists. They don't necessarily reject other deities on their base absurdity. They reject them because THEIR God says to.
that's the real clincher. atheists and theists simply don't think alike. atheists claim we are hypocrites, because they assume that we reject things based on the same data they utilize. we reject things based on other information. i reject the understanding of most gods (including most christian versions of god) because i don't think it qualifies as what my god is or ought to be. this is not the same as saying "omg it's so stupid to think that zeus turned into a swan and fucked that lady and she laid an egg." i mean. it sounds crazy, but divine insemination is divine insemination. i am a henotheist. i accept that there may be other gods, but i only like mine. maybe you're just really asking about imagined monotheists though, so i probably have nothing to do with this topic anyways.