Nah, that average age is about 13 to about 16 or 17 (but realistically, people as young as 11 use it, and people as old as 33, ie Scraggle, use it )
It's not about the age, it's about the maturity... and the joy...
If you like it, stick with it, have some fun, possibly make some money out of it in the process...
If you don't, go and get drunk and think of some brilliant plan to p*ss off your professor... lol...
It's all a matter of preference really.
Btw, I'm only 16. Yet, i love to program, and to just use computers in general, so im sticking with it for the long run...
Team EOD :: Programmer/Logical Engineer/All-Round Nice Guy