Comment by efuquen

Because your risk becomes everyones risk. The vaccine is becoming less and less effective against variants and people talk as if dying or hospitalizations is the only bad outcome. Long term health problems from even 'mild' COVID infections is a thing and the efficacy of vaccines at preventing that is not clear.

So getting a vaccine does not make the vaccinated isolated from the risks the unvaccinated choose. Your choices affect what I can do and the risks to my health.