I don't remember having an imaginary friend as a child. I tended to be a loner. A trait I see in my daughter now. She enjoys the company of others, but is quite happy and content in being by herself. She can entertain herself for hours, as could I at the same age. And often still do. Maybe it's because I'm an only child.
You know, I guess maybe I do have an imaginary friend... she's the one I talk things over with. She never really answers me though. I think she's the strong silent type.
"It's always useful to know where a friend-and-relation is, whether you want him or whether you don't."
-Rabbit, Pooh's Little Instruction Book