Got 3D World, Mario Kart+ DLC and Smash.
Two weeks ago.
It wasn't a worthwhile proposition until 3D Mario and Mario Kart were out for me. Luckily, those were both excellent.
I really bought the console purely for 4 games. 3D Mario, Mario Kart, Xenoblade and Zelda U. Zelda Remasters were a nice bonus, as were the other exclusive gems like Bayonetta and Splatoon.
October 2013, windwaker bundle
August 2013. I didn't have the money to get one at launch, and wasn't able to get one until nine months later. I currently have eight games for the system: NSMBU, SM3DW, Mario Kart 8, Nintendo Land, WWHD, Pikmin 3, DKC: Tropical Freeze, and The Wonderful 101. I haven't bought a game for it all year due to budget restraints (Nintendo games rarely go on sale), but now that I have all my debts paid off I can start catching up. I want to at least get Smash, Bayonetta 2, and Mario Maker.