You'd have to be dumb to sell your ds. There's been a lack of good games recently (excluding pokemon, which i love), but theres some beauties on the way Inc. Osu Tatakae Ouendan 2 Sim City, Zelda (A fair way away though i think) and There's tons of awesome homebrew too.
If you like JAP games, than I agree with you. But if you don`t like todays JAP crap like me, you would die for a decent game from euro developers.