I'm on the older end of millenial. Breakfast was a bowl of corn flakes, and arguing over who gets which part of the newspaper, then everyone munches in silence in different rooms while reading.
As the youngest brother I usually didn't get any part of the newspaper, so I read the back of the corn flakes package for the hundredth time.
I remember I used to eat cereal for breakfast then die at school from stomach pains and it wasn't until a few years ago that I realized it was because I'm lactose intolerant
My two best friends always had breakfast like you see on TV because both of their moms were homemakers. Another friend's grandparents were like that too. I always loved staying at their houses.