I'm not planning on getting a flu shot this year.
Why don't you want to get a flu shot?
I don't like the side effects of the shot.
It's fine to make your own medical decisions but you should base those decisions on sound medical information. The flu shot is important to help protect you from the flu. The side effects are very minimal and the protection from the flu is invaluable.
I researched the flu shot and I know enough to know I don't want it.
While you are certainly allowed to make your own medical decisions, you should talk to your doctor about the benefits of the flu vaccine. There's quite a bit of false information about the flu vaccine and you want to make sure you get the best advice you can get.