Actually, there is a somewhat complex philosophical argument purported by Descarte that follows this "God-shaped hole" line of reasoning. Not so much "everybody thinks there is one" but more, the mere fact that the humans' capability to fathom a perfect creator exists at all -- if there weren't a creator, would we have the ability to wonder?Far be it from me to argue with the man who brought us "I think, therefore I am", but the brief summary of the complex argument looks like baloney. I'm not a philosopher, but I don't see how our capacity to do any particular thing can be seen as evidence of God (or lunch). We're not babel fish. To my mind, considering the possible existence of a creator is pretty pedestrian compared to some our other thoughts, and this "look what we can do" thing sounds a bit too much like "dude, we are so! awesome! that our creator can be none other than the awesomest ever." I reject that argument too, primarily because of what it implies about me, given some of the supremely stupid things I've created. It's not a rigorous refutation, I'll grant.
Um, anyway, where was I? I think that belief in God comes only through faith. There is no logical argument to prove or disprove, and applying logic to the problem is kind of like trying to catch a pound of sailing mercury with tweezers (except more fun, like Pac-Man).