Yes they certainly do. Childhood is a valuable time in a person's life and should be retained for as long as possible. Even at 18 or still living under their parents roof they should be regularly reminded they are a child and must accept all their parents rules and regulations, and of course discipline. They need to be protected from the nasty things in this world and not be exposed to any of it, not even on TV.
The World of Pop and their noise machines (note I don't say music) is probably the most guilty.
Being made aware makes them more curious.
Keep them young.