It was/is going to be biggest weird period of my life.
Working from home is mostly awesome, but there are a lot of benefits in the office, IDK, I wish you could have a lot of the personal interactions that isn't so cold and remote as teams but also not needing to dress up or commute to work. Those both suck and I don't even really dress that much up or drive that far, but still, shows how much I don't enjoy that. Like I never missed being cut off, or just weird ass drivers, or crappy parkers, etc.
I think living by myself during that period taught me a lot about myself, but it wasn't a lot of overall good things and I found there is definitely too much time to yourself. I think I found myself drinking a lot more, became more short with people, and I guess resented the fact I had to interact with anyone more then than when I do it now more on a regular basis being back in the office or going out. Basically being personable became harder work because I wasn't around people all the time. I also paradoxically I think worked more or at least put in more hours as it was harder to get away. I did learn to cook more/better and it was also nice to in general spend less on things, so those were positives.
I also thing the lack of sports and other "going out" activities also taught me how, almost forced it seems like doing a lot of the activities are, like, I don't need to go to a game, I don't need to go out if I don't want to, it'll be ok. Overall I think in a good way FOMO kinda evaporated. What is there to miss out on everything is missed out on? And that feeling has kinda kept going.
I think overall what it really reinforced was my natural tendency to want to be alone, but I need socialization because too much of being alone is not good and you need personal interactions and contact. And if I weren't to be alone it better be with someone I don't mind spending that much time with.