Age is all relative. I find it funny how a lot of the posts in here are like: "I'm 16, but was really young when I joined." In my eyes 16 is still young. However, someone older than me can have the same argument about my age of 22. In the end though it's just a number. I know a bunch of mid-twenty-ers who are much more immature than a lot of the younger members of this forum.
20... when I joined. Sometime I notice threads wearing a little thin or fraying in a few places here and there, but I just stitch them up and pretend I won't ever need a good stuffing to liven me up as I go through more and more washing cycles.
I turned 15 2 weeks ago. Joined when I was 14. If you remember me back then you would've thought I was 12. Even I believed it. Edit: I still feel pretty young