Why do children Love to eat Junk Food Only?

As junk foods are very delicious, I have to say. Even adults can't resist it, so it's hard for a child to stop eating it.

It is simply, because junk foods are attractive and tastier than home made foods.

like someone above mentioned, because it tastes great lol! but a very big factor in how a child views junk food, comes from how they are raised. my 12year old girl will turn down a candy bar if there are fresh peaches or apples in the house..everytime. if you express to a young child just how good for you and great tasting (even if its by making the lip smacking noises and saying "yum") when they are just learning to eat solid foods...it makes an impression. a common snack request in my household is fresh fruits and even carrot sticks and celery with peanut butter.