I shunned the post-151 for years and years, but then my boyfriend got me Pokemon Platinum, and, well... went right back to that inner child. I managed to beat the Elite Four with only my stupid Luxray named Sparky barely standing at the end. I found Ruby for $10 and have been playing it whenever I'm traveling.
I have a really clunky original DS, and I swear, every single time a little kid sees me playing, they whip out their shiny, pretty DS Lite and look at me smugly. Fine, they can lord that over the 21-year-old on the metro playing a children's game, but I can drive a car, vote and drink! Beat THAT, eight year old!
(I'm not jealous. Really.)