I wear a mask because it is mandated, and also polite to do so. I have had three COVID vaccinations, and have had COVID as well. The logic of wearing a mask after all that does escape me. Unless I have the above information tattooed on my forehead, or I carry a sign, a mask is part and parcel of living here, illogical as it may be.
I can't be bothered taking someone to task who chooses not to wear a mask, life is too short. If they get fined as a result, no sympathy from me.