IF ALL OTHER VARIABLES ARE EQUAL, YOUR CAPACITY TO know God deeply will probably diminish in direct proportion to how much television you watch. There are several reasons for this. One is that television reflects American culture at its most trivial. And a steady diet of triviality shrinks the soul. You get used to it. It starts to seem normal. Silly becomes funny. And funny becomes pleasing. And pleasing becomes soul-satisfaction. And in the end the soul that is made for God has shrunk to fit snugly around triteness.
This may be unnoticed, because if all you’ve known is American culture, you can’t tell there is anything wrong. If you have only read comic books, it won’t be strange that there are no novels in your house. If you live where there are no seasons, you won’t miss the colors of fall. If you watch fifty TV ads each night, you may forget there is such a thing as wisdom. TV is mostly trivial. It seldom inspires great thoughts or great feelings with glimpses of great Truth. God is the great, absolute, all-shaping Reality. If He gets any air time, He is treated as an opinion. There is no reverence. No trembling. God and all that He thinks about the world is missing. Cut loose from God, everything goes down.
Andy Naselli has spliced together a long list of quotes from John Piper on why he detests television. The above quote is just a small excerpt. Read the rest at the link.