To mask or not to mask

I would argue that your health is more important than your wealth. Although we try here to focus on how to live well in later life that doesn't just mean having money in the bank. Happiness requires riches beyond mere money. With that in mind, now that you've been vaccinated (and shame on you if you haven't) what can and can't you do to improve your health outlook? The question of late is: mask or no mask. Here's an answer: masks