Re: why do parents expect from kids wat they never taught?
From what I understand, you (1 ummah) are saying that just like a teacher supervises kids at all times, parents must monitor the kids, you can't not know what they're up to, otherwise you're just irresponsible. I agree. You try to teach them all that is on the syllabus (or in this case, all that's in the Quran/Hadith), how else do you expect them to succeed? I agree.
But what you're not saying is that it is up to the kids to learn, you can't force it down their throats. That said, if they don't make an effort or if they misbehave, they *will *get detention and they *will *get grounded. If they don't, that just means the teacher/parent doesn't care. Now detention doesn't mean you use violence or give them some extreme punishment but that you discipline them. What I don't agree with is your idea of disciplining the kids which sounds like isolating them from the modern society.
The way I see it, we should definitely give them access to the internet but use parental controls and restrict online social networking until whatever age you think is appropriate for that. Give them mobile phones but limit their credit usage. Allow them to watch television and movies but monitor what they're watching and perhaps once a month ask them to write an essay on what they liked the best and why - just a way to make it all more intellectual. Even if you don't let them watch tele, they'll hear all about it at school, from friends, from neighbours, from relatives, from any exposure to the outside world just like you know all about sheela ki jawani despite not listening to music yourself at home.
Allow them and encourage them to make friends from various different cultures/religions but make sure they are aware of what is acceptable/unacceptable in their own culture/religion. Your kids are going to feel pretty darn isolated, left out and frustrated if you are so hell-bent on imposing religion that you deprive them of these things, which in turn might make them bitter and rebellious. They aren't going to be able to survive in the modern, multicultural, technological society. Islam teaches us tolerance and moderation. You have to be strict yet affectionate plus you have to act like their counselor as they're so sensitive, emotional and naive at that age.
To sum up, two short quotes I read somewhere:
"Parents who are afraid to put their foot down usually have children who step on their toes."
"A son/daughter is a little boy/girl who grows up to be a best friend.”
Once the kids leave school, the teacher's responsibility ends. A parent's responsbility never really ends but once the kids become adults, parents should switch roles from supervisors to best friends. By the time we're 18, our personalities have pretty much developed. If you've taught your kids the mannerisms of Islam and the modern society, that will reflect in their personalities and you can stop worrying about them going astray once they become adults. So I agree with the thread title in that you reap what you sow.