As I understand it, masks have had a big ancillary benefit, which is that in addition to preventing the spread of Covid, they also help to hinder the transmission of cold, flu, and other respiratory diseases that transmit the same way Covid transmits.
So…when this pandemic is finally over, why not have everyone wear masks anyway, forever? Aside from being a minor inconvenience, could the payoff be worth it - especially each winter, during flu season?
Other Covid measures like quarantining, social distancing, etc. could come to an end once the pandemic ends, but mask-wearing seems pretty easy.