Everything is here for the same reason, for manifestation and celebration. But the humans articulate this. The others cannot articulate it reflectively. They can be a manifestation, but they cannot reflect on that. Humans can, therefore our role is to be spokespersons for the universe and to appreciate the universe as the context in which the Divine and human meet.
The fitness of our hearts and thoughts to receive God's spirit is like that of violin strings. If they are properly tuned, in harmony with one another, then the touch of the bow produces beautiful music. If not, then there is only discord. Whenever our hearts are truly ready to receive God's spirit, they will produce heavenly airs and joyous harmonies -- both in this life and in the spiritual world.