Well, on a tangent, I once heard a very good homily and, inter alia, the priest noted that we are said to be "the salt of the earth" and that one major reason we use salt is to add flavor and zest to food. Now one respectable conclusion one can draw from that analogy is that people exist to add flavor and zest to the universe. Kind of a cosmic soap opera.
So humans exist to make the universe taste better to whomever is going to eat it?