I have to get it myself, being diabetic. As Izzybooter said, we get sick easier, tend to experience worse symptoms, and have a harder time fighting it off and getting better. Got my very first one last year. I was severely ill the month before I got it (and had been for nearly two months), but after getting it, I suffered nothing worse than a bad cold the rest of the flu season. Well, that and one 48 hour stomach flu bug, but the flu shot does not prevent that sort of flu.
Considering your job, Steph, I'd probably say it would be wise to get one. Better to be partially prepared than to face a possible long and horrendous bout with the flu.
Mimi