Don't be pessimistic, from August/september 2011 to december 2013, the Nintendo 3DS system was selling pretty well. But I guess the quick improve of the smartphones and the PS4 and Xbox One together made the 3DS achieve lower sales, but at the moment the system is performing good. Not as good as the Nintendo DS or even the Game Boy Advance (82 million in 4 years is not a prank), but still is doing good :)
Another thing: the New Nintendo 3DS / 3DS XL in February launched in NA and EU was successful. (Nintendo play well its cards, with Monster Hunter 4 and Zelda: Majora's Mask 3D).







