The journey from Mt Sinai through the wilderness begins in earnest with this week's Torah portion, B'ha'alotecha. Let the complaining begin!
The Israelites challenge G-d and Moses by asking, in effect, "Is this all there is?" Yes, even after the deliverance from Egypt and even after receiving Torah at Mt Sinai and even with manna falling from heaven, the people complain. What do they want? The variety of food they had in Egypt. One might respond, "Really, Israel?"