I can honestly say that I would probably have joined the sharing if it had been near me (if I could have gotten over my extreme apathy long enough to attend a meeting ;P). I didn't (still kind of don't) have all that many friends when I was 13-14, and I did get picked on. I was basically prime sharing fodder.
See, I've always looked up to people who were confident and happy and strong (I also would have been an avid nazi if I'd been alive in Nazi Germany, Not because of politics or racial stuff, but to be part of something bigger) and I've always wanted to be them. Heck, the sharing would have drawn me in like a moth to a flame. One meeting being around all those happy, confident, successful people who don't care about age? I would have been toast from moment one.