I think people suck just for the sake of sucking. Are they unaware that they suck? Perhaps. Though the possibility that people don't intend on having an uber amount of suckage seems quite low to me-- how can one not realize just how much they suck?
Redundancy aside, I sympathize with you. I don't mind people too much but given that my job requires me to put up with wave after wave of ignorance and idiocy...it stands to be a given that getting away from them is a must.