Being alone has a lot going for it, I reckon. I love being out on the streets in the middle of the night. It's hard to say what's so good about it when, as you say, you can have no one talk to you for hours even when there are people around at work or wherever. Maybe it's that you can really be totally in touch with your own thoughts without the distraction of having to consider the possibility of interacting with others.
Being alone
I also miss the possibility of eating out. We don't eat out much at all, but the occasional visit to a local café is a treat that just isn't worth the risk at the moment. Australian cases of COVID-19 are nowhere near the numbers in the USA, but our numbers are increasing rapidly (although mostly in one state) and it's looking like the freedoms we have started to enjoy again may be taken away from us.