The success of so much bias news to the left and to the right doesn't speak very well of the readers. In fact, isn't it the U.S. one of the most religious country? That should help understand why the fake news is so successful. Children are indoctrinated very early and by the time they are adults they are well trained to believe only the stuff that has been fed into their brains in the early years.
Having learned a thing or two about cults and cult members make me realize that humans have a need for confirmation bias through religion, or media, or any other means. Nobody wants to be wrong, and our brains will endure any cognitive dissonance levels to avoid disconfirmation. Will it ever get better? I hope so, but I am not very optimistic.