I heard a few months ago that Millenials aren’t eating as much breakfast cereal as previous generations because it takes too much time to prepare.
Judging by cereal commercials, I think it is because cereal causes too much adventure. It gives us too much get-up-and-go. It makes us do crazy things like skateboard, try out for the dodgeball team or hike Pikes Peak with nothing more than milk and cereal for provisions.