But seriously, I'm 21 almost 22 and I bought 2 3DSs technically.
First was back a couple of months after it came out, before the price drop though, forget exactly when.
Then I traded it in during a gamestop promotion for a 3DS XL, after transferring my data and everything.
It's aimed just like all Nintendo products, at anyone who enjoys it, in my opinion at least.
Still waiting on the reason I wanted one badly, Profession Layton vs. Phoenix Wright >.>
Although I won't regret it at all if it never comes out in English, amazing handheld.