Yes, of course there are tons of different definitions for God or gods. The way you're explaining it makes it sound like all of these labels are pointless. I shouldn't be an atheist because I don't know every god concept is out there so I can't be an atheist towards them. But generally, we talk in practical terms about god. Such as the Judeo-Christian God because it is so prevalent here in the united states. Obviously if someone wants to call their coffee mug a god, then I admit that it exists so I wouldn't be an atheist at that point.
Just because you find it impractical doesn't mean it is impractical. If your definition of 'god' is an omnipotent creator god, then every polytheist I've ever known is an atheist. You need to define the parameters. Are fairies gods? Then I am a theist. Are fairies not gods? Then I am an atheist. But, then you are telling Celtic pagans that their gods are not gods.
That is non sense. You cannot both believe in something and disbelieve in it at the same time.
Actually, you can. If you couldn't, there would be no such thing as cognitive dissonance. IE: excessive mental stress and discomfort experienced by an individual who holds two or more contradictory beliefs, ideas, or values at the same time [A Theory of Cognitive Dissonance, L. Festinger, Stanford University Press, 1957.]
In other words, humans are perfectly able to hold contradictory beliefs, it is only when the stress reaches an excessive level that cognitive dissonance enters into play.
For example, many Christians believe in a god who is omnibenevolent and yet jealous. These qualities are contradictory, but they still hold those beliefs.
But I can't say I believe in something and disbelieve at the same time.
Just because you can't doesn't mean no one can.
I don't know. I never said that I don't know was an invalid response.
but you are stating that it is inherently an atheistic one. IE: if I say I don't know, I must therefore believe the cat is dead. By saying agnosticism must be a negative response, IE a disbelief, you are saying there is no neutral position, no one who can hold a fifty-fifty position.
However, if I don't know if I believe what you have in your hand and I am reserving judgment until evidence is provided, then I do not currently believe that you are holding something in your hand.
Actually, it is perfectly possible to hold the Copenhagen theorem of quantum mechanics, which is to believe that there both is and is not something in her hand, until you observe it, at which point it when observation performed the wave function collapses into one of the two states. [Quantum physics & observed reality: a critical interpretation of quantum mechanics, Hermann Wimmel, 1992]
I am taking the default position, which is exactly what atheism is.
Please provide evidence for the fact that atheism is the default position, and in holding a position which is neither belief nor disbelief is inherently disbelief.