As for brushes with death personally....all I can remember is nearly getting hit by a car when I was younger (?). I ran out into the street without looking fortunately the car stopped in time!
Job wise, when I'm working it's part of the job. I'v seen people walking and talking one minute and dead the next. I'v seen them die fast and slow. AIDS, cancer, heart atack, stroke, cystic fibrosis, old age and I'm sure there's a few that I can't remember. Death has never bothered me, except with someone I was close to, then I get all emo. Fortunately that hasn't happened very often.