It’s fundamentally possible to both i) cross the street with the traffic light showing red with negligible risk with 0 traffic around, and ii) not come on a forum and say that this is the correct practice (or imply that people are ignorant and irrational not to be crossing while the light is red because it’s arguably more effective [including for vehicles where the crossing light has to be manually activated and then delay vehicles when you could have crossed when they were not around]).
Too much emphasis on resisting the social pressures aspect. Based on the risk/benefit, my own personal opinion is that that there should be a presumption towards wearing a mask. This is slightly strengthened by social expectation, but not the material point as a rational individual would indeed be justified in acting differently if the risk/benefit was demonstrably negative.
Living in the woods alone, of course one might not have to care about the thoughts or feeling of others, but that is not generally the case here.
On delayed social distancing in Singapore and dorms, this point is completely conceded, but HK does have similar flammable material with cage homes etc., the difference being (arguably, and hypothetically) masks acted like moisture on the hay, so that any stray sparks landing didn’t catch fire and rage out of control...