“What a useless tree this is. It does not have fruit or nuts that we can eat and we cannot even use its wood for anything.”
“Don’t be so ungrateful,” rustled the tree in reply. “I am being extremely useful to you at this very moment, shielding you from the hot sun. And you call me a good-for-nothing!”
Moral: All of God’s creations have a good purpose. We should never belittle God’s blessings.