Being a tennager is a lot easier than the life of an adult. You rarely have to worry about the bills, if you get hurt your mother and father take care of it, if you get into trouble, YOU really don't get in trouble instead it goes towards your parents.
Parents have to deal with going to work, similar to how teens have to deal with going to school besides the fact that people at work are more respectable and mature than those at a school. Parents go shopping for food, clothes, furniture, etc. They have to pay bills, rent, phone, power. Then they come home and have to deal with the teenages, "I want this..." "My clothes are dirty..." "I'm hungery..." etc, etc, etc.
When you're a teen and you get in trouble with the law, its nothing really serious, but when you're older you better watch out or you'll end up locked away or dead.
Sure the older you are the more respect you get and the easier it is to deal with people, but other than that, its really not much easier.