Play needs no purpose. That is why play can go on and on as long as players find it meaningful. After all, we do not dance in order to get somewhere. We need this kind of experience to correct our worldview.
We are so caught up in purpose that we would feel more comfortable if God shared our preoccupation with work. But God plays. The birds in a single tree are sufficient proof that God did not set out with a divine no-nonsense attitude to make a creature that would perfectly achieve the purpose of a bird.
What could that purpose be I wonder? There are titmice, juncos, and chickadees; woodpeckers, gold finches, starlings, and crows. The only bird God never created is the no-nonsense bird.