It really depends on how you define "God"
People forget that G*O*D is a title, not a name; it is what something is equated to. For thousands of years it referred to human beings that had reached a particular level of accomplishment, rather parallel to the Catholic rites of Sainthood not to mention how Nobility was recognized from as far back as Babylon if not further back. Even today when we see an exceptionally attractive and graceful individual, male or female, we refer to them as a God or Goddess. So on the more intellectual front, gods do exist.
According the the Kabalah, physics has proven the existence of the more metaphysical idea of God (the divine) by way of the phenomena we all know as "Light" -- it is a concept that much of mysticism agrees with and which places said omnipresence into a far more pragmatic sense of being. This is especially true when you consider how light can be used for storing information; while "new" to us in present time the ancients gave frequent inference about all truth and wisdom being sat upon the ethers -- the essence of our environment. Lie THE FORCE, it surrounds us and permeates all things.
The "Biblical" idea of God
DOES NOT exist, it was in fact created in the image and likeness of man and ironically, the original monotheistic side of this entity had nothing to do with the Hebrews or Jesus for that matter, it is the blending of the Zoroastrian idea with the older Aten of Egypt, the One God worshiped by King Aknauten & Co. In fact, most of the New Testament dogma stems from the Zoroastrian philosophy though it took a couple of centuries of evolution for it to get there; the biggest ear mark is the famed one-way ticket to Heaven or Hell. Prior to the third Counsel of Constantinople in the latter 5th century, reincarnation was an accepted aspect of the gospel; especially in that it was the more common tradition throughout the region INCLUDING early Judaism.
What confounds the whole biblical deity issue is the fact that there were several Gods and even a Goddess or two, that can be found in Genesis but not after Exodus because of "the deal" Moses made with Yahweh. If one were to take a look at Leviticus and the arrangements tied to the "Covenant" made with Israel, you'd think it were Daniel Webster conversing with old Scratch himself; Moses sold the soul of a people to a deity that most ancient texts classify as being a Bastard Child and more closely associated with Lucifer and Satan than some kind of benevolent, all loving entity.
The Metaphysical/Hermetic idea of "The Divine" is a consciousness and not a physical entity. Some would say that it is more the culmination of awareness and understanding shared by all sentient beings throughout the cosmos, which is why certain disciplined minds are able to literally tune-in to particular transmissions or files and from such, bring about certain forms of evolution, be it in the form of technology, the sciences, the arts or the auspices of human spiritual ambition. This is a very Gnostic form of perspective in that KNOWLEDGE IS SALVATION, a pragmatic and debatablely "Buddhist" mind-set which, in my personal experience and opinion, is far closer to the proverbial "truth" than all the rhetoric spewed from the bowels of most organized religious elements.
I believe that science has given to the world the method by which "the creator" made things happen. Granted, this suggests that something exists in addition to what I've intimated up to this point. While I can't explain this side of things, I do believe that there is something far greater than us that helped pull things together. I believe that there is a cyclic nature and set of "laws" that make such things unfold, but I am compelled to see a "master hand" behind it all. Maybe it's just the fact that I'm a recovering Baptist