Heh, I heard a great thing once. If this offends anyone, I'm not sorry, but I'm just quoting so...be pissed off at someone else.
Assume God exists:
God created free will, !@#$% ((s)he/it) gave us the ability to decide if !@#$% exists or not.
Now, all we have to base !@#$%'s existence on is unreliable, so using the brains !@#$% gave us, using the evidence (or lack thereof) that !@#$% left behind, a good rational result is !@#$% most likely does not exist.
What if !@#$% is just testing us to see if we have the rational powers to deduce !@#$% doesn't exist, and separating the 'unworthy' ones who lack such thinking prowess?
It's an interesting thought.
Ultimately flawed (gasp it should be it's own religion, called "Beating !@#$% at !@#$%'s own game"), but still an interesting thought.