I'm not convinced that cereal as a product is bad. Sure things like Lucky Charms are clearly terrible for kids, but Cheerios or Honey Bunches of Oats? They are the best combination of cheap, easy, and quick that someone can get for breakfast. My biggest worry with an anti-cereal movement would be that people would just start skipping breakfast (even more than they do), leading them to consume MORE calories at lunch and dinner to make up for it.