Hmmm...true, I don't deny the conundrum you mention. But ironically, using Bigfoot as an analogy to God, Bigfoot makes more sense as a metaphysical claim than it does as a claim of some undiscovered primate. The overwhelming *lack* of evidence of such a creature basically proves that creature does not exist. In the same way that the overwhelming lack of evidence of the God of the Bible essentially proves it does not exist. *If* Bigfoot existed, it (more likely) would exist as a shape-shifting alien, a spiritual being incabable of being caught or studied. At least then it would not be falsified by the lack of tangible evidence. Same principle applies to the God hypothesis. Equally non-sensical, but if you are gonna talk nonsense, at least make it logically consistent with your absurd premise.