Childish nonsensial immature ~totally worth it. There are times when I'd like to act childish nonsencial and immature just because being a "adult" just sucks. Be it the occasional bout of berating your friend incessantly for breaking your minesweeper flags streak or the laughing at a friend for falling hard on the floor.

CSI~5 has one episode where the one millionaire tycoon has this dirty secret when he fantasizes about being a baby, and has this huge play pen when he would act babish and all. complete with its own cot, giant milk bottles, huge toys, large wooden rocking pony. Its sick. I kept trying to close my mouth the whole time.
I guess the purpose of shows like this is to make people realise how normal they are.