People have been so scared by the news, they are still wearing masks outside (where it doesn't spread) and even when vaccinated!
Also, a mask, like wearing trousers, is a trivial cost.
I still will wear one after being vaccinated, because I expect the effects to be multipliers: 80% protection from a vaccine and 90% from a mask is 1-(1-0.8)(1-0.9) = 98% protection.
>The chance of catching COVID-19 from someone coughing as they walk past you in a park is "infinitesimally small," B.C.'s provincial health officer said Wednesday.
Do you wear a helmet outside? There's nothing that prevents a brick from falling on your head while walking past buildings. You have a good chance of dying. Better to be safe than sorry.