Can't it be both?
My own personal belief:
"God" was once a singular consciousness. Space / Time didn't exist. "God" had an existential crisis - fractured into multiple personalities (billions?). This is where creativity grew exponentially, due to the interactions between these beings within the "God" collective. We devised universes. Existing outside of "Time" we have limitless potential for creativity.
This is one of these universes.
Me, I think we come here to experience things. I think there have been many, many reboots over the 4.6Billion years that this universe has existed. Different iterations of life and consciousness. We keep making the game more complicated. More interesting.
A friend of mine turned me onto the "Seth Speaks" book many years ago - it echoed a lot of what I felt. I do believe that we're just avatars for our greater selves that exist in another plane.

. This is the most complicated MMORPG ever devised. T'will be interesting when we evolve our technology to the point where the game within a game is next to impossible to distinguish.

(maybe that's when we get another reboot)
