It seems in this country we tried to push mask wearing on pure altruism, yea many would do so of course, but clearly that was a flawed approach. We should have tried selfishness as well. Mask do protect you, some more than others. I've worn masks in the pandemic largely for selfish reasons, and so I have carefully made sure they are as tight as possible before going inside anywhere, didn't want the covid. Now that I am vaccinated, I wear it while it's the law, because I think CA did right but giving people a bit more time to get vaccinated than much of the rest of the country. They are going away soon though.