Child -> Adult and Adult -> Child

It pains me to see children who behave like (most) adults, that is, minus the innocence, naivety, silliness, mirth, playfulness, curiosity, courage, blind confidence, lack of botheration about what others will say or think etc. And, ironically, it also pains me to see adults who have forgotten how to 'be' or don't believe in 'being' a child..... :-(