Personally I feel just because you can't stop all bias in journalism, doesn't mean that everyone should just completely abandon objective reporting. That's like saying we shouldn't fight crime because there will always be criminals. Objective reporting is a good goal even when reporters fall short. That being said, there is a place for perspectives, like the opinion section of a newspaper, but it shouldn't be 80% of the newspaper.
Also I think a lot of people would feel a lot better about Fox if they said they were conservative but they don't. They say they are fair and balanced which implies impartiality.