I never understood that. I came from another country and live here now for many years. I don't get it how breakfast is a completely acceptable time to eat just dessert food -- pancakes and syrop, waffles, oatmeal smothered in sugar honey and cinnamon, cereal, even "healthy" yogurt with sugar in it, toast with jam on it. Not saying I don't do it, I eat those things to once in a while without thinking much about it, but in general looking at it, it just seem so strange.
There is the whole "breakfast is the main meal of the day" mantra. Is that really true? Not sure anymore. Maybe it is something created by cereal and bacon producers out there...
For the curious, for breakfast, I am used to eating porridge -- buckweat, wheat, oatmeal with butter and salt. Or just rye (I call it "black") bread and butter (yeah I know bread is sugar too to some degree). Coldcuts, cheese, smoked fish. Not all healthy and good but most are not sweet.
Something that is hard to give up is fatty foods, I like bacon, olive oil on my things, even eat whole cured and spiced pork fat. I would cut slices of it and eat it as a snak. But I am almost underweight for my height.