We all have biases. And our biases affect our viewpoints. This is why liberals get their information from ThinkProgress, MSNBC, DailyKos, NPR, NY Times etc. People like reading things that reinforce their beliefs. Same with conservatives and sites like Hotair, Townhall, Fox News, WSJ, etc. It's all a bunch of "Lolz look how the other side is ruining America". It's all bullshit. We like listening to people who hold the same views as us, and any contrarian opinion makes us want to punch a kitten. It's human nature.