heehee...As a black sheep, I rarely eat breakfast since my childhood, and I don't eat breakfast. I don't skip it like starve myself in the morning, I just don't feel hungry until noon (ok if I eat breakfast, I tend to feel zzz all morning and afternoon, I guess I just feel too full). As for memory, I have photographic memory even at age of 30 with 20 yrs+ of alchool consumption, straight A student, IQ of 160. As for weight, still 90 lbs, 5ft3. My siblings too, all skinny and don't eat breakfast.
My theory is if ur mom fed u breakfast when u are a kid ( I guess 99.9% of mom do feed kids in the morning with some sort of cereals or bread or junks), then u have to eat breakfast in order to kick start ur day and keep the whole machine sane. My mom doesn't eat breakfast, so she never got up and feed her kids in the morning (and yes, her mom used to fed her in the morning when she was a kid), so yes..my mom is the fattest person in my family.
My take is stay with your habit (if u eat breakfast, keep eating ur breakfast), and don't overfed yourself. You need to shovel snow for 3-4 hours to burn 2000 calories. Forget the 4000 calories xmas dinner, it will take weeks to burn it off ( assume u can move ur bum bum enough to burn it off)!
One of the sick article I read on Economist or Bloomberg recently on caloric deficiency (may explain why I am skinny without breakfast, no workout, and get my ID check at liquor stores), said smth like if a mouse is fed with minimal food intake (practically starving), the mouse would live the same length as a regular mouse with normal diet, but died without any sign of aging (just drop dead). yeap, when I read it, I found it really creepy. I think another bride told me that Oprah did a show on this topic as well....
Of course, genes may play a role too.