I was baptized at age 14. But it must be said though, I do feel that personally I knew what I was doing. All these years later and despite the fact that I am no longer one of Jehovah's Witnesses, I still am respectful of the personal vows that I made to God at the time.
You should remember that religious belief or unbelief is established early on in life, not later.
However, I do agree with the general sentiments of this thread. Often youngs ones are presuured into getting baptized at an early age for all the wrong reasons.
Sometimes it is for family status reasons. I remember as an elder people asking me why my 19 year old wasn't yet baptized (he did get baptized eventually but quit not longer after). Your status as a 'spiritual' family is undermined if you have kids in their late teens or early twenties who are not baptized.
I am sure that at other times young ones get baptized round about 16 in order to be free to go out with members of the opposite sex. You get a young baptized brother aged 19 or 20 in the congregation and suddenly all the 16 year old sisters are getting spiritual and being baptized. Given the silly restrictions of the WTB&TS I must say I can't really blame them.
Eyeslice