I have yet to see a single 1 thread show up since I got here. I've thought of making one on several occasions for that reason. Though, to be perfectly honest I really don't like creating threads like that. It's sort of like "hey! I'm this type! Let's talk about ourselves, our issues, ask questions, what makes us tick!" and it makes me feel really narcissistic and self important and I feel really icky when I do stuff like that. Most other ones I know feel somewhat similar in response to talking about the self ad drawing explicit attention to it. It's more like, making one (or anything in that sort of vein) out of thin air without an explicit reason just feels wrong and rife with self-importance. Though if there is something that could have prompted it, then it's ok. Eh, I digress.
That could be some of the reason for it anyway. That, and most folks tend to have bad impressions of 1's being all strict and nit-picky (which is a stereotype, but it's a stereotype for a reason) and not wanting to deal with it or talk about. No one (even ones themselves) likes to be at the receiving end of a 1's "paddle of correction", and might want to just ignore them from being butthurt (if you can excuse that horrible horrible pun).