Gnostic Atheism? WTF?

[One Above All]

I am a gnostic atheist, and I'll tell you why.
While it is true that you cannot prove the non-existence of something based on evidence (in fact, if you set your standards high enough, you can't prove anything at all), you can prove it by logic alone. Logic is not sufficient to prove the existence of something, but it can prove the non-existence of something, if that something has a definition that is either impossible or self-contradicting.
I have defined a "god" as having these two qualities:
Omnipotence
Omniscience
Each quality has paradoxes associated with them, and the two together are just horribly inconsistent (impossible).
A god worthy of worship must have another quality, in addition to the other two qualities: benevolence. Due to the nature of our universe, this is inconsistent with reality (but not necessarily the other two qualities).

This is why I am a gnostic atheist and, unless my definition of "god" changes, it is as I will remain until I die.
EDIT: Even if I became a gnostic theist, I would never worship any god that was not benevolent. Again, due to the nature of our universe, such a being does not exist.