Ok, first off I'll state I'm not talking about taking PPE away from front line workers, I'm talking about home made (sewn) masks. Also I know that they are useless unless used correctly, removed safely, replaced regularly, etc.
Advice seems to be conflicting across the world as to whether they are any use, and in the UK the prevailing wisdom seems to be that they are not recommended because they only stop the wearer from transmitting infection, but not from contracting it (ie my mask protects you from me, not me from you).
My question is, given that we know many people are asymptomatic, why aren't we just wearing masks anyway, as they can't worsen the situation, and may improve it slightly?
(Genuine question)