There are lots of reasons to still wear a mask right now-- COVID is still alive where I am, of course. However, the one that makes me actively happy to be the only one at work masking up is that it's a socially acceptable* way to not show your expression. Ironically, wearing a mask makes it easier to keep up the other mask, because I don't get accused of having resting bitch face or or gawking.
Plus, I don't have to shave!
* I mean, I'm sure these fuckers shit-talk me, but they are habitual shit-talkers and I am an autistic trans woman so there was always going to be something.