Today is the first day in Korea where the indoor mask mandate has been lifted. I've seen one person - besides me - not putting on a mask. It'll take forever before people stop doing it.
One of the reasons seems to be that other people are judging and saying: 'people who take off their masks "must believe their face looks good."' It's basically the same reason why the Taliban force the Afghan women to wear a burka, to force their own wishes on other people.