... about most of the gods that societies have ever believed in. Some of us just go one god further."
Dawkins raises a point which some, if not many, theists will dismiss as irrelevant, but I am not exactly sure why. Of course Thor doesn't exist, even though for millennia an entire civilisation believed he did. Same goes for Ra, Jupiter, Posseidon, Huitzilopochtli, Baal and another 1,600 or so gods worshipped by millions of our ancestors. We can say without fear of contradiction that we in the modern world do not believe in those ancient gods and in that strict context we are atheistic toward them. And we are atheistic toward them for the same reason billions of us are theistic toward the Abrahamic god. Because we have been told what to believe and taught not to question for fear, deep and dark, that we will be lost to the Abyss if we do.
Not only are we all atheists in a contextual sense, 1,600 +/- 1, we were all born atheists in a global sense. We were born believing in no gods. If we exchange a child born to Christian parents in Birmingham for a child born to Buddhist parents in Ulan Bator, what those children will come to believe will be much different from what they would have believed otherwise. The reason is evident. What we believe and do not believe is instilled in us by the accidental situations of our births and upbringing. We had no choice in the matter, and most modern religions steadfastly forbid that choice to us while we live out our lives.
Some of us have come to believe the world would be a better place if the people in it would examine what they have been told to believe without prejudice. It's never easy to do, but is generally worthwhile and emancipating. Some of us keep our faith in God but free ourselves from the shackles of oppressive religious organisations. Some of us just go one god further.