Most people would rather do the least effort to preserve their sense of being a good person.

Well, it's like that Occam's Razor, right? It's simpler to believe: "I don't like it because of (excuse)" instead of "Some of my fundamental beliefs are completely wrong and I need to re-examine them." Such a person may feel that this is not quite the full story, but are all our thoughts completely examined? It's not necessarily malicious to say: I've figured this out 'well enough' for now, and I can move on to something else.

This is an important distinction because then to tell such a person that they're "bad" or that they "hate" is completely meaningless to them. They don't consciously hate, they just adopt oppressive philosophies and they've never needed to examine them.