Survival skills are nice to have. But it's even nicer to live and work in a location where robbery isn't something that someone might reasonably experience twice in 3 months.
Of course, I left a job when my lunch got stolen twice in 3 months; well 3 times, but one time I brought leftover pizza in a pizza box, that's understandable. Taking leftovers in plastic is just rude... especially when my shift started at 4pm and everyone else was working normal hours, other than the overnight person whose shift started when mine left.
If I had been robbed because of the location of my job, I'd probably show up one more time, to return my stuff (assuming it wasn't stolen when I was robbed).