It's one of the greatest inventions ever made for mass communication. It's so great that almost everybody owns one.
Since it is such an effective communication device, it is also misused by many. Corporations, and even our government use it as a tool to push their ideas across to millions.
Just as the printing press, quickly changed the world by being able to mass produce books/booklets, the television has also changed our society. The printing press was a pivotal instrument during the Protestant Reformation, and some argue that Martin Luther's ideas never would have spread so quickly, if it hadn't been for it.
The Nazis utilized propaganda posters created by artists to push their ideas into the public sphere.
So as you can see the television can also be misused. Some dictators like Hugo Chavez utilize television programming to persuade their population into Communist/Socialist ideas. He will often stage questions and answers that make him look intelligent, and will also have someone ask him something stupid, and ridicule him.
The television is just an invention that enables us to push media. Youtube is now leveling the playing field. Many people are able to produce their own shows with very little money. However, there have been international meetings surrounding streaming video and security. Many countries do not allow for freedom of speech, so they censor the internet and the television programming.
It's an incredibly popular invention, and many people even fight to buy cheap televisions on Black Friday.
The invention shouldn't be blamed for it's misuse by millions of kids who don't go out and play because they use it to play video games all day.
The invention could be used in many more brilliant ways. It's just not utilized that way.
Many great inventions have bad side effects. Look at the automobile, and traffic. Sitting in traffic is one of the most pointless things we all do in life. Why do we allow ourselves to be stuck for hours and hours a day ?
The car is great, but sometimes, I get really annoyed by how many cars have flooded our traffic system.
The television is also great. But, a lot of times I'm flipping through the channels and have nothing to watch that interests me.