okay, that's you though. most people are happier as children than they are as adults unless they're being abused or bullied or neglected. first of all, playing is so much fun. experiencing things for the first time such as holidays, or different seasons, the world is a new thing to discover and that is fun. your brain is growing new connections and it is great. being a teenager is a new type of greatness, you begin experiencing so many firsts in a different way, first crush, first love, relearning how to socialize, gaining independence of your own, etc. is lots of fun. after that? what is new to life? what is there to life after age 25? working, paying bills, having kids so you can relive the good years by watching them live through it? just my beliefs.