It is perfectly logical to hold a position of being an atheist or lacking belief in a "God". The problem is that "God" must be defined in a manner that can never be truly adequate for the sake of argument. Once defined, the burden of proof is on the one who claims such a thing exists, not on the person who claims to have no knowledge of, or outright denies the existence of, such a thing.

@abracadabra - What is entirely weird is that you recognize this, make a similar argument in a later posting but call yourself a mystic. The argument you make is close to the exact argument that Dawkins and many other atheists use.