Childhood is the sketch of life…I agree with this sentence because only in childhood the main character traces are formed.
Often people who had difficult childhood and not caring parents become angry people and make their revenge on the whole world.
Now many normal parents try to protect their children from bad world and show them the kind sides of it.
A very important thing in childhood is relations between
parents. 
If they love each other and never quarrel children grow loving
persons too and have normal model of behaviour.
Childhood is unforgettable time for every person. It is beginning of life, time when you start to discover world around you. All this time your individuality is building.
In childhood you begin to understand other people, you become more communicative, your character depends on other people around you and on place where you live.
It is very difficult and often impossible to change something in your whole character when you become older. That is why childhood is very important. And parents should not ignore that time in the life of their children but be very careful and spend much time.