I mean, the alternative where you don’t get the vaccine includes much higher risk of lung damage, nervous system damage and total organ failure.
I think even if there was data to back this up (that somehow vaccine gives less protection than a real infection…), getting a booster every year or 6 months is well worth it given what happens with an unvaccinated covid infection. People do seem to get reinfected and die after already having it once.
I don’t think that your model of how vaccines work really makes sense. I mean, the point is to prime your immune system with antibodies to something similar but relatively harmless so you can fight off the disease immediately rather than waiting for it to get a strong foothold… in a way that is safe.
Saying it is less effective than getting sick is like totaling your car to avoid regular maintenance.