Andrew,
Whether you believe in God or not you still have an underlying assumption that you take for granted, Christians take the evidence of the world around us to say God exists, an Atheist looks at the same evidence and says God does not exist. The issue here is ultimately that the statement God exists is formally unprovable and totally unscientific. This means that ultimately you have faith that God does not exist and others have faith that he does, neither sides can formally prove themselves correct.
At tonight's Thanksgiving, Erin remarked on how this was her first real Thanksgiving dinner away from her family, and that it was an odd feeling to just sit down and eat without any prayer beforehand. (Yes, she's a solid atheist in no danger whatsoever, thank you for asking.)
And as she said this, it reminded me of how wrong it is to give gratitude to God for blessings that actually come from our fellow human beings putting in a great deal of work.
So I at once put my hands together and said,
"Dear Global Economy, we thank thee for thy economies of scale, thy professional specialization, and thy international networks of trade under Ricardo's Law of Comparative Advantage, without which we would all starve to death while trying to assemble the ingredients for such a dinner as this. Amen."