For Shiva's sake BillyJoe, why can't you just freaking let this go?
Your opinion here is inconsistent with how language functions to let people communicate clearly. You don't think that atheists should say, "There is no god," because we cannot claim omniscient knowledge of the universe. However, that would have to apply to every negated existential statement - you cannot hold god to a different standard, because to do so assumes that god is somehow more important, which in turn assumes that god exists!
This means that we could no longer say, "There is no bigfoot." "There is no Santa Claus." Hell, if you were out of tea and a guest asked you for some, you would not be able to say, "We have no tea." You'd have to say, "Based on the lack of evidence for the presence of tea in this house, I have provisionally concluded that there is no tea here."
You wish to couch the high-probability (99+%, less than 100%) non-existance of god in such unnatural language as, "Given the current state of evidence it seems that there is no god, though the state of evidence could change in the future." Why? To make your opinion sound more scientific? Or is it just that you are so afraid of being wrong that you shy away from definite statements of any type?
Either way, you should bloody well man up and accept that this is the way that the English language is used, and that your opinion means very, very little in the wide ocean of common understanding.