Proverbs 22:6 "Train up a child in the way he should go; and when he is old, he will not depart from it."
God is displeased with the child that goes wayward. It's not that God hasn't seen this problem before though. Children have been going wayward since Cain did in the Good of Genesis chapter 4. And by reading about Cain we can see all that happened to him.
One way this has impact is that the home suffers greatly as a result of a child going wayward. Good parents are grieved by the rebellion of their teenagers. The late teen years are supposed to be a time of preparation to get married and leave the home of mom and dad. However...many teens are leaving the home prematurely to "live their own lives" leaving the parents to claim God's promise of Proverbs 22:6. Oftentimes the children continue to live in rebellion going a way that is contrary to God and the Bible. God's promises are true and faithful. He will bring them back. It just might take years before that happens. So parents need to pray and claim God's promises and wait on God.
What happens too is that when a child goes wayward and rebels...there are always those who will tell the parents that they sheltered their children too much or being the cause of their child leaving the home. Time and time again you will see credibility of Christian parents suffer. II Corinthians 3:2 says "Ye are our epistle written in our hearts, known and read of all men." I would rather be accused of sheltering my children too much than to let them be exposed to things they don't need to be in order to escape criticism and ridicule.
Another thing that comes to mind is how limited that wayward child may be as to how God uses them if and/or when they return and get right with God their family and their church. David was never quite the same after his adultery with Bathsheba. If you do a study of the Word of God of those that went wayward you will find they were never what God would have liked them to be had they kept themselves pure and clean with God.
The best thing for a teenager who is struggling with going wayward to do is get in the Word of God and pray for the strength to stay with God and know that your parents aren't being mean. They love you and are doing the best they can to train you up in the way you should go. What way is that? That way is God's way!!
Thank God you have parents who love you enough to want God's best for your life. So many teens are out there today without that love and concern of their parents. And in those cases those teens are on their own.