contrary to popular opinion, it is NOT always the parents fault if a child turns out badly. there are other influences on a child. various groups, bad friends, lack of peer support, mistreatment by trusted family/friends, harassment at school.
Do not punish them till they have learned the lesson a hard way. I have a cousin whose son was playing too much video games and because she dropped the bomb too much he ended up getting kicked out of military school and getting himself severly injured when he was on his motorcycle.
Could be lits of reasons: Parents arent as great as they seem outwardly More influences on kids than just parents Bad genetic mix. - Sometimes, no matter how hard parents try (sometimes they tried TOO hard) a kids makes choices that lead them down a bad road.
I think kids model their parents behavior more than they listen to their instruction. I think that a parent should set the standard and example by how they live their life. "Do as I say and not as I do" is a LOAD............