Honestly, parenting (unless you haven't been there ) is not so damn easy. Kids are devious and lie and cheat and steal, Right to your face sometimes. No matter how you INTEND to bring them up, society can sometimes over rule your rules. Its not an easy thing. I've been friends with a few gals that had great Church going parents, very strict but gave her just enough rope to hang herself ..... and of course she did. It wasn't about how they raised her, because she was taught proper... but about rebelling against what they wanted and doing the total opposite.
Now, these were parents I would have died for, she had everything she desired, they loved her and she never did without. Still, she lied over and over to them. They trusted her and she betrayed that. I don't blame them for that a all.