I do spend much time alone, especially at this point in my life. Retired, and only a few social activities each week. I certainly don't need to be around people all the time, but it's nice to have one person around the house, even if we don't always get along.
What I don't want is to be around people who don't know me well and expect me to chatter like everyone else, and wonder what's the matter if I don't talk much. Especially in large groups -- totally feel like an outsider.
But in places where people know me well, they get used to how I act, and I'm comfortable enough with them to be a bit more outgoing. It's all good. Sometimes if the right subject comes up, you can hardly stop me from talking. Been accused of running into the weeds conversationally (am I doing that now?), though that's probably more in writing than speaking. But mostly I just listen.
In the last 15 years of my work (software development), each year, I progressively worked more and more remotely from home. Still communicated by phone and email, but nobody else physically present. The last few years, the project was transferred to a company 1000 miles away, so it was working 100% at home. That was mostly fine with me. I have to say, though, I felt very out of touch with respect to knowing what was going on, and doing collaborative design work (which I enjoy) over the phone is much more difficult. So if I were to work again, I think I would prefer a situation that is local, where I could meet with the coworkers at least once or twice a week, and keep in sync with what's going on. But the rest of the time I would be very happy working by myself. Even when I worked in the office with others, I'd often keep working late after everyone else had left, and it was the most productive time as long as I didn't need something from someone else.
I have a social group where I see a few good friends once or twice a week. That, plus my partner, is enough social time for me.