I see it total different.
Kids: Play kick ball, draw on walls with crayons, play hide and seek, are scared of the opposite sex, watch cartoons, and only responsibility is to wake up and follow their parents guidance.
Adults: Have jobs, pay bills, drive cars, look for sex, procreate, avoid their parents, try more things on their own, and make decisions on their own more than they do when having to be told to.
Kid stops at 15-16. That is highschool age, start to be left home alone, look for boobies, get part time jobs, start paying for their own shit, get cars, start making decisions on their own, etc.
Its pitiful to think “I just turned 18, I am now an adult!!! YEeahhhhh”. Growing up I remember friends at the age of 18,19 and even 20 being more childish and plan stupid compared to some 15 & 16 year old’s I knew.
AGE DOESN’T MEAN SHIT. You are only as mature as you act and carry your self. If people act like fuckheads, thats their own damn fault. doesnt matter how long they are or were on this earth.