Known downtime of a day or two (and not feeling well) is, to me, still a tradeoff to make compared to the potential of being intubated in an ICU. Each Pfizer shot I've had I've had somewhere of 8-18 hours of being really knocked out, usually starting around 24 hours after injection. I usually have milder (but some) reaction to flu vaccine each year (usually up to 8 hours of fatigue/headache/etc) within a day or so.
Risks/reward still moves to me take the shots.
Comments like this are only intelligible if one considers the probability of each outcome.
Deterministically (probability 1) getting unpleasant vaccine side effects vs. deterministically ending up intubated in an ICU? Sure, give me a booster every month. But that's not actually the relevant calculus -- your probability of ending up in an ICU is already extremely low after two shots.