Sure: Immunocompromised individuals may not be saved even with the vaccine (not enough B-cells or T-cells to fight off the disease even with the vaccine training them up). But its pretty much 100% proven at this point that the vaccines are 99.999%+ safe (all deaths due to vaccine are measured in the 10-in-a-million or smaller magnitude), while being 95% effective at preventing symptoms against the disease in question. Because the vaccine has been deployed to over 100-million Americans, I have evidence on how it works!!

There's no doubt anymore in my mind. There wasn't any doubt in my mind in December 2020, and we've only got 7 more months of evidence: the virus is surging in unvaccinated areas (ex: India), while receding in vaccinated areas. Something like 100% of LA's COVID19 deaths were from unvaccinated indivuals, despite only having ~50% vaccination rates (so 50% / 50% split of vaccinated vs unvaccinated in that population, but 100% deaths coming from only the unvaccinated pool?)

What more evidence do you want?

With a high enough vaccination rate, even a disease with R0 of 20 can go away (COVID19 has an R0 of 3 to 6, maybe 9 if we include Delta variant).

We've literally eradicated a more difficult and deadly disease before. I'm not saying we need to eradicate COVID19, but its absolutely within our power.