If its all created for us apes, its awfully wasteful.
I think it would be the height of our ego to assume that this vast universe was created for the sole purpose for us mere humans, because like you described in contrast to everything else, we are rather insignificant and only we, confined to where we are, unable to explore further, and be humbled by our pettyness and ignorance, think we are the centre of everything and the most noble of all creation.
However my question would be, why is it that only when a Creator is put into the picture, all of sudden are we to assume that this universe was created along with us within it, for our sake?
Only the person who claims entitlement and ownership of the Creator over the rest of other creation can think so.
So the error in thinking is on your part.