Well, this is quite an old post, and had it been asked now, I would have answered differently, or been wise enough not to answer at all. I know I'm certainly not sharp or keen on much (and I fail to pick up on grasping the last post!?), but most certainly the seeds of Peter Pan rest in his own childhood as well being spread like jam all over his life.
I could go on and on talking about this, but I feel like only saying one thing. In the words of Andrew Birkin, "Peter Pan is the boy who would not grow up. Whereas Barrie was the boy who could not grow up. Big difference."
Peace!