Why are people skeptical of the flu shot?

I've always wondered why people seem so hesitant to receive the annual flu shot. I am not sure if I had ever had one and have recently been thinking of getting it but so many people advise me not to. A lot of them say that after they got the vaccination, they ended up getting the flu. Which to me sounds like coincidence because I know that the virus in the vaccination is dead and can in no way cause the actual virus. It's funny because million of people get shots containing various things to prevent them from developing an illness and they never question that they might get it but as soon as flu season comes around, so many refuse to get the flu shot. I ask this because I am one of these people. I've been vaccinated against all the proper things but still, I refuse the flu shot...I am convinced I'll get the flu. Tell me please, your experience after receiving this vaccination.

Were your after shot symptoms normal? (redness, swelling, slight fever, achy, fatigue) This can last for up to two days I believe.

Or, did you experience the flu afterward? Do you think it was from the vaccination or perhaps that you had received the vaccination too late?

Sorry for all these questions, but I'd like a little information on personal experience before I decide to get it. I am asthmatic and feel this would be the best choice, even though for some strange reason I feel like it will only get me sick.

Thanks so much.