My wife's a teacher. I've worked with several cops. I've had a couple friends who were doctors. Last month I spent five days in and out of the hospital getting hooked up to an IV for antibiotic treatments to try and stave off a nasty infection that decided it really wanted my right leg... and saw the remarkable amount of crap that nurses put up with.
I don't like people. As a rule of thumb, many are stupid, dangerous sheep. Those who have the patience and spiritual fortitude to dedicate themselves to helping others, even when those others refuse to help themselves, constantly amaze and inspire me.