This has been my observation with my (now) 5-year-old...when he was a toddler, he wouldn't eat certain things, but left to his own devices, he generally chose foods that were both healthy and well-balanced. They just may not have been what I felt like making for all of us. Of course, things like potato chips and sugary cereals were not on the offer. To this day, his default choice for dinner is a bowl of green peas and slices of red bell pepper, with some kind of bread and a cheese stick.