In the span of time between G-d's creation of Man and Man's fall by eating of the fruit of the Tree of Knowledge (of Good and Evil), what was our original purpose? Were Adam and Eve (and Adam's ex-wife Lilith?) just suppose to hang out in the Garden of Eden? What would they be doing? What was their purpose? Because it sounds like a simple zoo. Let's make Man in our own image, G-d said, but then let's leave him locked up in an enclosure.
God was lazy and needed someone he could subcontract the naming of the animals to. After that he needed to fire Adam, so he came up with the bogus Tree of Knowledge rule.