I'm one of the people who had an adverse reaction to the COVID vaccine and boosters, a mild allergic reaction resulting in shortness of breath. Sucked to have to spend an extra hour or so at the vaccine centre each time to be monitored, but a small price to pay. My father-in-law unfortunately did develop pericarditis, which was a known side-effect of the vaccine he received. He's doing better these days, but it took over a year to clear up.

But despite that, I'd still recommend getting those shots. Apart from these side-effects being rare, I've seen how Long-COVID fucked up two of my friends. Both in their 20's, healthy, worked out very regularly and in peak condition. COVID completely wrecked them, one catched it before the vaccine became available and the other now regrets his decision to put his trust in the crap floating around social media. Hard lesson to learn.

Personally I came down with COVID at some point and it made Influenza feel like the common cold. I don't think I've ever felt worse in my entire life and I shudder at the thought of how it might have ended had I skipped the jabs.