I have a theory so far... it would appear from my own life and that of everyone I know, that the more social a person is, the less they actually care about others at all (empathy-wise.)
As the scale keeps sliding upward to being social as a priority - the scales of abilities and care/concern/love for OTHERS slide downward.
Obviously there's always a rare few who contradict this, but the vast majority of "socialites" certainly follow this model. I wonder if it's something in the constant thought process of worrying about how you can appear best to everyone leads to becoming a habitual manipulator... protecting one's social image becomes the greatest of all fears and increasing it the highest of all priorities. I've seen the most social people eventually become manipulating sociopaths - master manipulators.
Many of us have this dislike because of the poor treatment we've received - and the more social they are, the more cruelly they treat us. Many of us have been manipulated, had credit for our good work stolen, mistakes blamed on us instead of themselves. Because of them, we've lost respect from our peers, lost promotions, lost money, jobs, security, spouses, families, even our very freedom.
There's something about us that socialites universally despise... I wish I could put my finger on just what that is though. Is it because we're completely immune to all those social minutiae they focus their whole lives on? Is it because we don't "play the game"? 