Well, I had three vaccinations against COVID because I was traveling so much. I wasn't expecting any side effects. However, after the third one I developed a headache that simply would not go away, for four days. My blood pressure also went up (it had been 90/60 though so I had some wiggle room and it went up to 130/80 and has never gone down). I mean, I hate to think about volunteering to have a headache for four days, let alone have permanently increased blood pressure. Oh, and then a few weeks later, I got COVID anyway. I did not take whatever meds that Biden took, because weirdly enough, they had the very same symptoms as COVID (whcih I wasn't even experiencing). Oh, and they told me I'd probably relapse on those drugs, so no thank you. Now, proponents of the vaccine will say that it saved my life, but I honestly feel like it made so many things worse for me personally, over the long haul.
I personally believe that I need to take both empirical evidence and personal experience into account.