It's more of I'd like to prevent others from getting sick so I choose to get it. I knew there were going to be repercussions from getting it as I've heard multiple people having sickness after it. It's normal because even has young children/babies the same thing happened.
If the vaccine was 50% or less effective then I would be more skeptical, but with a higher rate with each vaccine (Pfizer, Moderna, and J&J) then I was ok with it. It's for my family and friends and the same reason I wear a mask everywhere I go because at this point it's a habit.