@piscesmoon: "I was extremely shy as a child, I was perfectly happy with my own company and a book-I would have read all day quite happily but I dread to think what I would be like today if I had been an only DC HEed. Very isolated and unsociable, I would imagine. Being in school and seeing DCs everyday was a godsend."
Hmm, for me it was the opposite! I was a very shy child who found school stressful. It was loud. I didn't really have friends there. I wouldn't have minded that, except that at school you are expected to have friends so I felt there was something wrong with me. It was not OK to sit in the corner with your book when you wanted.
It was in my neighbourhood that I found friends. It was good to be fairly free from relentless teasing and to have the freedom to associate with older and younger children, including boys, and to go home when I'd had enough. When I was ten, the six-year-old boy over the road didn't criticise my fashion choices, he worshipped me. The older ones took a protective interest, or ignored me. I remember one slightly odd lad who was picked on in my class at school. To my shame, out of self-preservation I avoided him there. But he lived just nearby, and we played together often at home. Nobody was going to tease me for it.
Despite not having had good experiences in large-group situations at school, the minute I left school I flourished. I could seek out people with whom I had something in common, and wasn't expected to behave or dress like everyone else.
So I think I would have enjoyed being home educated. I agree that seeing the same children repeatedly is helpful for a shy child who wants friends. Unlike my older daughter, I seldom make new friends in the supermarket. As an adult, I've always preferred to study and work with small groups of people so I can get to know them. But for children this can be provided elsewhere besides school: local parks if you go often enough, cousins, Brownies, home ed groups.