I think there is some disagreement whether breakfast is the most important meal....
I agree with you.
My week day breakfast is coffee, no milk, black or teaspoon of sugar or honey.
That's been it for years but on weekends, I do eat bacon/sausage/ham/steak, eggs, potatoes and pastries.
I got in the habit of week day coffee when I was on the road selling and it just stuck with me over the years.