When I first saw this topic, I thought it was absolutely ludicrous, but I think Yerusaliym makes a good point. I think we are so wrapped up in our notion of freedom that we take it way too far sometimes. Granted, a teenager should have some freedom and privacy, but ultimately, he or she is still living under his or her parents roof. That means the parents are paying for their teen's clothes, food, etc. etc.
Sort of off the subject, but I don't know how many people I've talked to who live at home who think they are independent just because they have a part time job. Um, it doesn't work that way people. Anybody can live at home and hold a part time job, where your parents are still paying for housing, the biggest expense, food, utilities, etc. I think people have taken this notion of independence way out of hand. I think we're so spoiled with it that we think these freedoms are inherent, but they actually have to be earned.