Thanks to vaccines you've lived long enough to post here today.
The benefits FAR exceed the risk. You run a ~5% chance of getting the flu each year vs 1:1,000,000 chance of having a severe adverse event from the vaccine. Of those 5% that get the seasonal flu, ~ 36,000 of them die each year. Keep it in perspective, the more people that get vaccinated, the less chance of perpetuating the disease (ala heard immunity). Many times you can get the vaccine for free, takes two minutes and you're on your way.