Why is socialization of children important?

Socialization of children is important because it sets the groundwork for all future socialization. 

This sets the groundwork for all of the child's future social situations.  This primarily occurs when children learn the attitudes, values, and the actions that are deemed correct by other members in their culture.  This is first mainly learned by observing family and friends. 

He will get sick right away , he will have low energy , he will loose all his nutrition