I’m currently in the US staying with my girlfriend (we’re in a long-distance relationship) and her family. Been here for a month, have 2 more to go. Where I’m from (Romania) “breakfast foods” are not a thing. Breakfast is a full, proper meal just like lunch and dinner. Since being here, I haven’t been able to get accustomed to the concept of “breakfast foods”. Cereal, pancakes, waffles, bacon, eggs, toast, sandwiches, etc. These are like side dishes or snacks to me. I just don’t feel sated. Gave up on that. Now I’m back to eating what I normally do for breakfast: steak, pasta, rice, soup, stew, chicken, fish/seafood, etc.
I wouldn’t be able to find the time to prepare so many meals. In Germany we usually only have a proper meal for lunch. Bread (often with a sweet spread like marmelade) or cereals for breakfast and bread with something savoury for dinner. The German word for dinner is literally “evening bread”.
Of course this can vary. I think it is more and more common for families to have the proper meal in the evening when everyone is together. And of course with guests or going out with friends you’d make something special or go to a restaurant.