Decisions about mask wearing may be touted ‘personal’, but the greatest risk of that ‘personal’ decision is to the community not the individual. Not covering your face doesn’t change your risk much but it changes mine a lot. (you don’t have to believe me, there are a bunch of new studies and reports and just look at that Supercuts)
In short: Your mask shows you care about other people, mine shows I care about you.
Even shorter: Your mask is for me, my mask is for you.
Keep your droplets to yourself.