I can't complain, but sometimes I still do

Joe Walsh knew what he was singing about. In Exodus, over and over again the Israelites complain. They complain about the food, about the living conditions, about Moses and Aaron. Miriam and Aaron complain about Moses. Never mind what wonders they had seen God do: the plagues, the release from slavery, the parting of the Red Sea, manna. Never mind that God had blessed them with the riches of their Egyptian neighbors.

This isn't limited to the ancient Israelites. What is it about humans that makes us want to complain? Why do we miss what God us done for us? Maybe Philippians 4 is where we need to spend more time.