As counterpoint, I love working from home. Pre-COVID I'd usually work from home 4-5 days a week. My focus at home is always way better than in the office (though a noisy open-plan office and a culture of interruptions is a factor as well). One nice benefit around focus is that when I'm having trouble focusing at home, I don't feel as guilty (or try to cover it with make-work) as I do when I'm at the office in the same situation.

I'm also a very social person, but my non-work time is my social outlet (though I still get some "lower-quality" social time over Slack and Zoom during work hours). When the company was smaller (a couple hundred people, now we're over 3k), I certainly spent more social time at the office. But these days I prefer to just work hard during work hours, and meet up with friends (who are often also co-workers) after work.

But at the same time, I love that working at home gives me the flexibility to cook lunch with my girlfriend or take a break for a walk or even just stare out the window in the middle of the afternoon. While my commute isn't bad (25 min transit ride or 45 min walk), I don't mind getting that time back, either. Instead I can get up and go for a 30 minute run, and start work at the same time.

So the COVID rules have left me in roughly the same situation as I was before, at least work-wise (I miss seeing my friends like crazy). Fortunately I don't have kids; nearly everyone I know with kids is finding it impossible to juggle them being home all the time with getting their work done.

It's really interesting though to see how this sort of thing affects people differently (and I'm genuinely sorry you're having such a bad time!). I expect the incidence of work-from-home will increase a lot even after we've stopped social distancing, but there will still be a strong (but newly-flexible) office culture.