Atheism makes no sense. If you want to call yourself an atheist because you don't believe there's a god, that's fine. But to try to claim that there can't be a god is just utterly insane.
In order of logic, from sane to insane:
Agnosticism: "There might be a moose in these woods."
Theism: "There is a moose in these woods, but I have no evidence."
Atheism: "There can't possibly, under any circumstance or at any point in time, be a moose in these woods, but I have no proof."
Moose exist (we have a direct physical evidence). Try unicorn.
Agnosticism: "There might be a unicorn in these woods."
Theism: "There is a unicorn in these woods, but I have no evidence."
Atheism: "There can't possibly, under any circumstance or at any point in time, be a unicorn in these woods, but I have no proof."