If there is one thing I have learned, it is this - most people don't care about anything other than themselves. At least in part, it is not their fault - they have their own crappy life to deal with, so why bother having good intentions and care for others (work or otherwise)?
It is tolerable most of the time, except when it comes to powerful jobs like cops/doctors/lawyers etc where even a small mistake can wreck someone's life. I had a colleague whose lawyer made a mistake while filing paperwork. He lost his visa and move back to his home country, all because a lawyer (well paid one at that) couldn't bother to do simple paper work correctly. I don't know if it was incompetence or I don't care attitude, my colleague's life is ruined either way.