I'm 16, and want to do my AFF ASAP.
I believe I'm mature enough to handle it, I've wanted to skydive for as long as I can remember and have put time into learning about it already, so I know (within reason) what to expect.
Some people I have met however, mainly the ones that say "we should all go BASE jumping one day!" well, I wouldn't say it was for them....
It's all to do with maturity