If I were a service worker interacting every 5 minutes with the general public, I would want that normalized for myself.
Likewise anybody who visits people's homes, or anybody who's usually in close quarters (e.g. doctors and nurses, dentists, beauty salon workers, etc) with people.
Hopefully after all this mask-wearing will be as normal and expected as keeping one's breath fresh, not wearing too much cologne, etc.
There'll be those who mess it up, but doing so will come with social stigma.
(This is all more a wish/hope than a prediction)