I've had them pretty much annually the past 10-15 years, but this year did not....worst reaction I ever had to one was feeling a little sickie for a day or so, but nothing really bad. This year I did not get one - and the past week I have been down quite sick with a bronchial thing. Who knows if a flu shot would have made a difference or not....the type of strain the vaccine is geared for vs. the actual germ that gets around can be two very dissimilar things.
All said, I think the flu shot is a good idea - it can't harm you, and it can protect you from some very serious complications.
And, aside ..... I remember the polio epidemic in the 50's and I know first-hand what that did to its victims. Some of the best things for humankind have been the eradication of smallpox, polio, and other formerly deadly and/or disfiguring diseases due to the development of appropriate vaccines. How many of us who were ravaged by childhood diseases such as measles, mumps, pertussis would not have preferred a mini-sting of a shot compared to the sicknesses we bore.