So this confirms by Nintendo what I already though, the 3D is a pointless feature.
Erm, no. It just means that 3D is optional, and they aren't forcing it on developers. It's the same way with the DS touchscreen.
"I think there could be a Nintendo 3DS software title which does not use the 3D feature at all, and I believe Nintendo will develop such software" Not forcing it on third parties is one thing, making a game yourself that doesn't use a display feature you put in the system yourself is another, the 3D obviously doesn't add anything to the game, this is just Nintendo sharing that view