Ageless Wonder

I grew up with the notion, that immaturity has direct correlation to age... Wow, was I ever wrong! Although I'm not old, my experiences have led me to believe that immaturity relates to feelings and state of mind at the time of the action. For example, if an individual feels that they are being treated poorly or unappreciated, they react to situations 'immaturely' at times. Age seems to have extremely little to with it. Some of the most immature people have to be some of the most unhappy/vile individuals. So rather an age factor, perhaps it's a happiness factor??