I got mine the Christmas after EU launch so I was 15. I could've got it at release or for my birthday (August) but I remember wanting to wait until the metallic red one was released since I didn't like the blue or black ones and they had shown off all those different colours at an event (I think it was the 2010 E3?) and I was super disappointed when only black and blue were available at launch...
Since then I have had:
1) Metallic Red 3DS (Now in the possession of my brother)
2) Red XL (Now in the possession of my boyfriend)
3) Majora's Mask edition NXL
And honourable mentions to the 2 Japanese N3DS' I have owned in the past.
Hopefully the next one I get will be a Pokemon limited edition one, I liked the red and blue N3DS that the USA got but I need a UK one
I'm not sure, I got my first DS (the really big, silver one) not long after it came out, I would have been 8/9 I think, then the DS lite, then the DSi. I didn't actually get my own 3DS for a while, I was just using my sisters for some reason. I've had a 3DS for a while now but I actually just this month bought my own, new 3DS.
I was in the 6th grade, and I got it as a reward for getting 2nd place at the state level for the research paper category of history fair (I was a nerd lol). So I was 11 or 12. Nintendogs and Cats was my first game for it.
I got my first 3DS, a blue 3DS XL, for Christmas when I was 9. When I was 11 I decided to purchase a 2DS since my 3DS XL was starting to wear out. My 3DS XL's broken now, I still have my 2DS, but since it's starting to wear out as well, I might get another one soon.
I saved up and bought my first 3DS at 16. It was an used one, the old regular black one. It has a huge scratch on the bottom screen so it was much cheaper, though I coudln't afford buying a new one.
Bought the N3DS XL at 19, a brand new one, cause my old one started being annoying (freezing, some buttons usually not working, etc.) and because I have huge hands and playing on a small 3DS was painful. My N3DS is the dark blue one, I think Europe got these instead of the American maroon ones.
Got a white DS Lite as a gift for Christmas at 11, it has a broken hinge by now.