3. Community.
The unmasked person in a store presumably won't get sick, and won't infect others. But I'm outside, and have no way to know what's going on in the bloodstream of the unmasked person. So I decide not to enter the store. So, indirectly, the unmasked person is bad for business.
I've had COVID, donated plasma...
Wore a mask in a store today for the first time due to this post (and hearing of so many friends that have it now)
Just saying, I'm one that finds it VERY, no EXTREMELY uncomfortable to wear one (Sorry to those that can't relate, I don't believe I'm being petty, I really find it hard to breathe normal with it on)