I am 16 (!). I started learning lisp (with PCL) when I was... 15? Maybe
14, but almost certainly 15. But then I went back to Python until my friend showed me how cool Lisp was (I already knew it was pretty cool, but also I thought it was too complicated for me; turns out it's not). Now I'm not sure I could go back to Python. (Also, it seems I am tied to Common Lisp a bit more than I'd like to be; I've read a bit of Scheme and Arc and the expressions-in-function-position still trip me up a bit.