In other words, you automatically assume that if a source you don't like says something you don't want to hear, that source must be lying or skewing the facts. That means that you are deliberately limiting yourself to one side of the story.
Unlike you, I know that refusing to consider what the other side says is the fastest way to become trapped in an ideological echo chamber. When I see references to something by the Daily Caller, or Breitbart, or the Washington Times, while I know that each of those are biased, I still read the reference because I know that even a stopped clock is right twice a day. For instance, I remember when Breitbart was exposing the woman working for the IRS who was targeting conservative organizations - Breitbart was right about that, even though most of what they say is wrong.
That, sir, is why you are doing yourself a real disservice by ignoring the other side's sources...because you never know when you're going to get a more factual side of the story than you ever expected.