I'm an atheist, so Satan doesn't exist for me. He's just one more of the pantheon in the Christian religions.
Oh there you go literalizing everything. I guess you are fundamentalist Christian Atheist.
I am a Jehovah atheist.
There is nothing wrong with being an atheist. I think being an agnostic is better from the standpoint of being more open-minded. However, if the god of the fundamentalists or the JW's or Islamics were the only choices available I would be an atheist too. In fact, I was a atheist for several years when I realized the insanity of the cult like church I was going to.
If by atheist you mean that you find the overly anthropomorphized God of the fundies is infinitely implausible then I must certainly agree.