It seems to me that the question of God’s existence or nonexistence is vacuous. One person answers the question “yes,” the other person answers “no.” Neither has the slightest idea what the other means unless they have a respectful chat about what the symbol means to each of them. Believing or disbelieving in a symbol are equal and opposite forms of literalism, and just two ways of misunderstanding what a symbol is in the first place.
Even if I were able to explain exactly what I believed (!), a fundamentalist Christian might call me an atheist, and a fundamentalist atheist would probably call me some sort of mushy-headed hybrid “Believer.” You could say I believe in “God” in a way; I just don’t believe in Santa.