I think a lot of people hold grudges against people for not performing to their expectations or desires. This in turn causes them to divorce logic in favor of rejecting them in an absolutist way.
It's most often, but not exclusively, seen in toddler's and those with diminished faculties (alcohol, old age, drug abuse and genetic predisposition) or those who had a parent who failed to model the behavior required for a developing adolescent.
I wrote a dissertation on it. You can read it at
www.throwthebabyoutwiththebathwater.com