“Everything that motivates living creatures is based on some weakness or flaw. Hunger motivates animals. Lust motivates animals. Fear and pain motivate animals. A God would have none of those impulses. Humans are driven by all of our animal passions plus loftier-sounding things like self-actualization and creativity and freedom and love. But God would care nothing for those things, or if he cared would already have them in unlimited quantities. None of them would be motivating.”
“So what motivates God?” I asked. “Do you have the answer to that question, or are you just yanking my chain?”
“I can conceive of only one challenge for an omnipotent being-the challenge of destroying himself.”
God's Debris, by Scott Addams (surprisingly enough)
AND IT'S COMPLETELY FREE! Go get it, everyone.