[Byte1]

Interesting question. Another question or observation is:

I go shopping where I am distanced from others and constantly moving along, never near one person longer than passing them. I am wearing a mask. A mask that I really doubt does that good, but it gives one security like a kid's "blankie." On the other hand, we go to a restaurant and no one wears a mask and usually sits in one place for over an hour. I have no problem with either scenario, but it does bring up the question as to why some will cry if they see someone pass them in a store without a mask, and then leave the store and sit in a restaurant without a mask on. And please don't insult peoples intelligence by assuring everyone that you wear a mask in the restaurant.

Why do some wear them and some don't? Like others have suggested, some don't think it does any good. Some don't care and do not feel they will catch the virus, and some wear one thinking that they are wearing a biohazard suit and will be perfectly safe.
Wear one or don't wear one, I am not going to bother you either way.