Do you know what your kids eat through the day?

My wife who takes care of my son w.r.t to food requirements always complains that he is too choosy. In fact he does not drink milk, does not eat fruits and goo vegetables. A few vegetables are put in to make curry, rotis (made out of wheat flour) rice and curds are his main course. For snacks he likes some food prepared at home and likes sandwiches and salads. I have a feeling that these children who at later stage may eat a proper food. This is the age they tend to eat more of junk food which we totally avoid at home.