Why don't people just censor themselves?

Someone once told me "If you have nothing nice to say, then don't say anything at all!" I'm sure this is good and all when it comes to being polite, since everyone appears to be very sensitive but let's just apply that to other things around us.

If you don't like what's on the internet, then disconnect yourself and don't search for information.

If you don't like what's on the TV, turn it off.

If you don't like what's on the radio, change to another channel or turn it off.

If you don't like what you're reading, put down the piece of text you're reading, and do something else.

If you don't like someone, don't spend your time researching / stalkbooking / googling them.

Do the things in life that matters. Take care of the people that count. Look after yourselves and each other. And if you don't like what you're reading on this blog, why are you reading it then? I'm not forcing you to read it...