Usually when people ask the "God question," especially capital G, they have a particular god in mind -- and especially (in my experience, in the US) the Christian God. But having studied history, read some of the work of Joseph Campbell, etc., recognizing that over the millennia billions of people have worshiped nearly as many different gods and associated, you begin to have a certain perspective on things that makes it difficult to take any one dogma all that seriously.
Early on, it seems that people worshiped rivers, volcanoes, etc., as living spirits. These objects of worship became abstracted over time and (in certain respects) more sophisticated, but it ultimately boils down to the same thing -- and I would argue for the same sorts of reasons, which are mostly because people wish to be comforted in the dark. But is the Moses myth or the Christ resurrection really any more compelling than any number of cults that have lived and died over the course of the last six thousand years? I don't think so. I think it's more compelling for many people today because they are raised to believe in its truth, which is then supported by cultural forces. But if they had been born in another time and another place, they would be worshiping their mud idols with the same intensity of belief. It's all kind of an absurdity.
And for those who currently need to disabuse themselves of the Christian myths specifically, I would advise some exploration into the canonization of the modern Bible and the early histories of the Church. Whatever your stance on such pabulum as "Pascal's wager," etc., a little education can really shed some light into the "holiness" of Christian institutions and so forth, and if we expect to know a tree by its fruit, well...