All those old leaves are worth more than gold!! Look how decayed the stuff on the bottom is? It's all done by insects, fungi and bacteria, and all the waste that comes from these animals put back a lot of organic matter into the soil! Earthworms are almost the most important animal in the world; without them the soil would be exhausted and we would all starve to death! Big piles of old leaves makes excellent compost! Anyway, you worked hard today. Thank you for an entertaining video.