See I have seen this stuff all over and there is one giant cause of it all, people don't raise their own kids in the early years. That is the time that everything is important. Don't get me wrong external influences still happen, but if you give a good loving upbringing in the first 6-7 years you will be much more likely not to have a 12 year old yelling in your face. And I certainly don't me spoiling them, that screws them up worse, but simply telling them no and mean it. You don't have to hit, don't have to yell, get from the get go instill manners and respect in them. It really isn't that hard. Everyone thought that me and my wife were too young to be having kids and that we would do a terrible job, yet still to this day we get people, friends and strangers, asking us how we get them to be so well behaved. Oh and they get just as disgusted with the behavior of other kids there age as we do.
