In response to Jeff M's finishing move, I'm buying the 3DS for the games, I do not believe in buying game hardware for the tech, and let's face it, if I did, I wouldn't be buying a 3DS.

The games at launch aren't very exciting, but we already know there's a new Mario game on the horizon (as if there was any doubt), we know there's a remake of Cave Story coming, Mega Man Legends 3, Devil Survivor, Layton vs Phoenix Wright, etc.

In fact, just look at this list of games:
http://3ds.nintendolife.com/games/soon

I'm not sure where they're getting their info, and some of those are probably 2 years away, but it's still a promising list.