Everyone in my family (including me) is vaccinated and boosted, but they all (except me somehow) still got COVID during December, with my mom getting especially

Everyone in my family (including me) is vaccinated and boosted, but they all (except me somehow) still got COVID during December, with my mom getting especially sick. Fortunately they all recovered and are fine now (I think largely due to the vaccine), but I feel like there exists an alternate universe where my mom dies despite being vaccinated. Because of this, I don't think the "fuck the unvaccinated, I am sick of masks" mantra works; people can still get pretty sick even after being responsible and getting vaccinated, and I think as a result the mask mandates might need to stay. I don't like them either, but I like people getting sick even less. NOTE: Just to be 100% clear: I am very very very much not anti-vax. Please get vaccinated.