1. i never sell games or consoles i have. i got burned too many times doing that during my Saturn import era. Also, keeping old stuff gives me a physical gaming history, and i can play any game i've bought any time i feel like it.
2. The SP's design is near perfect. Sleek, and extremely portable. The DS design is nice, but much more bulky and from reports, heavy. Plus, Fire DS > *.
3. i do want to play Crystal Chronicles with friends someday, and i just got Pacman VS from a friend.
4. The occasional GBC game. MGS: Ghost Babel and Shantae... i'm looking at you.
5. Trade in and even eBay values of the SP are far lower than they should be, especially with the price drop, which brings us back to #1.