I'm really not understanding some of the posts on this thread.
A) 42% of the country is fully vaccinated.
B) Vaccinations are great for reducing spread and minimizing the severity of the illness, but they don't eliminate spread or provide immunity from Covid.
C) The world is full of ignorant, stupid, and extreme people (and people who check more than one of those boxes).
Personally, when in a well-ventilated indoor space with lots of room, I only wear a mask if ~40% of the people are masked. It's not for me; it's a courtesy. It makes people feel safer and it doesn't bother me. When in a crowded or poorly-ventilated indoor space, I wear a mask for me, for a few reasons. Being vaccinated means I'd likely be asymptomatic if I did have Covid, and I'd rather not pass it to anyone else unknowingly. I also have unvaccinated kids, and I don't want to pass anything on to them. For myself, I still haven't seen any data about long-term effects of Covid on vaccinated people, so I don't mind taking minimal precautions to avoid getting it. It doesn't bother me anymore when others aren't masked, but I don't get why so many are bothered by seeing masks. Are the people wearing them stupid? Maybe. Extreme? Also possible. They could also be ignorant, or maybe even all of the above. Who cares?