Digital Media & Junk Foods

Nowadays many a parent expose consciously their children to cartoons on Television channels and provide gadgets to play computer games etc making use of digital media to divert them so that the parent can escape from the children to do their daily chores
But this trend makes the child tied to the digital media and deprive them of the open sky and pleasures of the outside world in their childhood
Then the children become addicts and as you have commented stop annoying and turn magically into angels - very silent angels and settle down and remain occupied for very long periods even forgetting their food and sleep and play glued to the TVs and Computers and electronic gadgets
And most of them prefer only junk finger foods which they find easy to swallow while continuing with their preoccupation of watching the TVs and the computers etc
Because of this exposure made possible in the early days by the parent himself to keep the child calm and alone without disturbing the parent the children continue to be so even when they grow up
The parent with the day to day complex life choose to ignore the old tested ways of bringing up the child and leave it to the electronic world to fend for itself