I mostly heard that ones someone reaches on their proper age all are variable such us physical and emotional. Being responsible is automatically being level up thou. It might be to other but I guess not to everyone, some just simply wanted to keep being stubborn enjoying missing around and throw all the boredom to their agonizing, innocent parents. We may never know I was been or you was been one of those way back. Being a mother now I just hope that my child would not pick the same pieces of mistakes that I have done. I am deeply sorry to my loving parents all the head aches that ones I have put them through. And I thank them much for not giving up and for lifting me every time I am feeling down. I love even more my dearly parents.