My mother once told me that when I was much, much younger - in my first decade of life, though she didn't phrase it that way - that she used to arrange for me to have a friend over. Now, this friend was almost exactly my age; he was the son of my Godmother, one of my mom's oldest and closest friends, and was born just barely over a month before I was. Both of us were oldest siblings in our families, too.
So it helps, I think, to remember that this is someone I grew up with.
Anyway apparently my mom would set up these afternoons for Childhood Friend to come over and play with me. And he'd come over, and we'd play... for a while. Then I'd get tired of him, and go off to play by myself. Apparently he would then go and complaint to my mom that I wouldn't play with him, and she'd explain that there wasn't much she could do about that, and... I don't know. I don't know what the next step was, whether she would give him something to do or send him back to find something to play with on his own, or what. Maybe she'd just call his parents and tell them it was time to come pick him up?
Like I said, I don't know.
But this kid would come over to play, and we'd play, and then after a while I was done interacting and I'd go play by myself.
I think that really tells you all you need to know about what I was like as a kid.