[Discussion] Objectivity - Why is it so hard for some people

Keep in mind, this being a discussion topic, I will uphold the guidelines set to discussion threads as discussed in this thread. I except well thought out answers, and your argument must provide valid points, of course proving points invalid is also a good part of an argument and is thus encouraged, as long as it doesn't become a straw-man. All posts not in line with this guideline will be deleted without notice.



"Generally, objectivity means the state or quality of being true even outside of a subject's individual biases, interpretations, feelings, and imaginings. A proposition is generally considered objectively true (to have objective truth) when its truth conditions are met and are "bias-free"; that is, existing without biases caused by, feelings, ideas, etc. of a sentient subject." So why is this so hard for some people?
Humans will always have an inherent bias regarding almost everything no matter how hard they try to be unbiased, that i understand, but why do some people decide to throw objectivity out the window, using subjective views and opinions on matters which could be resolved purely by objectively looking at the facts?
Are people just too biased to look at facts, or is something deeper at work?

Discuss.

humans are self-centered