Why are people in general ditching traditional behavior and manners?

By this I mean why do people use profane language in public..and allow their children to behave badly in public with out discipline for their behavior. The parents are just as bad as the kids, they yell, use profane language, or just simply do nothing, ignoring the child in question. I am not saying it is the two to six year olds, it's the seven year olds, teenage kids, and pre-adult ones who should have been taught better. In public or stores, they will run, scream, talk down to the parents, act ugly to other adults, and use ugly statements to describe older adults. When approached on their behavior they will snicker curses and flip others off. Where are all the parents who should be teaching their children better manners? Has the good old fashioned manners gone by the way side. It seems that lack of control of one's self is the wave of the future, part of what I call the instant society! Is this what we have to look froward to, in the future, ill-mannered, profane speaking people?