I do wonder whether the western refusal to wear masks is more cultural & political rather than rational. Cultural because we don't have a culture of wearing masks and so changing our culture so you aren't judged is difficult, political in that it's politically difficult for public officials to say both "Masks do help stop the spread of this disease" and "We don't have enough masks, and we need them all for high risk workers & sick peeople so please don't try and get masks"