Don't underestimate what we eat is tradition and habit. There is no reason why we should favour bacon and eggs and white toast for breakfast. It is convenient, quick but probably not particularly nourishing compared to what is available. I eat soy beans daily also for breakfast and have been doing so for years.
http://www.durgan.org/URL/?PUFKP 7 May 2012 Breakfast
My standard breakfast soy beans and oats with skim milk. Simple, quick, nourishing, and palatable. I now also use a tablespoon of black-strap molasses.
http://www.durgan.org/URL/?QIUDU 22 November 2011 Cooking Soy Beans