This is probably going to be buried.
I have gotten the flu probably only once or twice. The last one I had it was because I was exposed to so many sick kids (college) during finals. I experienced extreme fatigue, aches, and just under the weather. It lasted for 2-3 days.
Since I'm a SAHM, I do not get exposed to the public anymore or go to college anymore.
I think it's fine to get the flu shot IF you work in a higher risk environment (hospitals, daycare, teachers, etc).
My mother had the flu shot, and was required because she worked at a major hospital, and she had such a BAD (to the point where she was almost hospitalized for it) reaction to it that it took her a long time to get over it. So now when they require her to have the shots, she has doctors' orders not to get it.
My DH rarely get sick, and when he does, it lasts for a day or two. He says it's all because of Listerine.
So, it's really a personal choice. I personally won't get it because I don't think I'm at risk, and I have hung out with a lot of sick people and haven't gotten the flu (with exception of one time where there was a big epidemic at the school...now it's required for the computers to be sanitized frequently).