The younger you are the less likely you are to listen to the input from others who have come before.
Funny, this is actually because of brain development. The teenage years through, usually it can be longer or shorter on a more personal level, about 25 the forepart of the brain is still developing. That part that is able to reason and understand things from another viewpoint. This is often why Teens seem unable to understand that their parents actually went through what they are going through, and you end up hearing things like, "Things are so much worse now than when you were in school, Mom!" And why they so often think their parents are stupid.
And this is also why you hear how people get wiser with age, they actually are better able to reason and to see things from another's viewpoint and they only get better at it with practice.