That's what science is already doing, to the chagrin of Biblical literalists.
There's a clock on my mantle that ticked itself into existence. I didn't see it created. You didn't see it created. The "design" it exhibits is illusory. Why assume someboy put it together and wound it up?
Be sure and makes lots of money, since that's the only thing in which a soulless collection of atoms brought into existence by accident can find fulfillment. And don't ever become brain-dead or anything. We might want to euthenase you to make room for other soulless collections of atoms who can actually contribute something (or at least use you for a clone farm).
There's no atheist nastier than a self-hating redneck.