I live alone too, since some years, and that's really the best option for me. I've lived with people before and I never felt like I could recharge from socializing since you're always stuck with people around. When the day is done, I really need to be able to control if I see people or if I don't. But I think it mainly depends at which level you need people - some people likes to be alone as much as possible, and some others need people to talk to, when they come back from work, when they're bored, etc (like it seems to be your case?). I've known people who loves living with roomates because you always have some friends around (if you get along), and I've known people who loves the peace of an empty place.
YES. I went to a boarding school for high school, and let me tell you....... it's hell for the socially anxious. Seriously. You never get a break. You go to school with everyone you want to stay away from, and then you get to go home to.... goodness..... THOSE SAME PEOPLE! Or a portion of them anyway. It seriously sucks major.... um, marbles. I could never get a break.
And then I was accused of hiding in my room. One girl, after she was done telling me something, said, "Okay, you can go back to hiding in your room now."
And then at one point my caretakers (official name was houseparents) banned me from going to my room before bedtime to get me to interact more
It was sort of a good thing because it helped me to open up more, but the process was slow and painful, and I was ALWAYS on edge. Well, of course I would be, being surrounded by my peers