I used to think like what OP said. But after seeing the response in Asian countries with their much larger families and denser cities working against them and y

I used to think like what OP said. But after seeing the response in Asian countries with their much larger families and denser cities working against them and yet slowing the spread, masks might be playing an important role there. It also reminds everyone constantly. It does stop me from touching my face as well. So yeah, even if it's not perfect it's going to help quite a bit.