I certainly wouldn't call the Wii U lineup as it stood last month 'robust', but for perspective, I haven't bought a single non-VC Wii U game since 2012, simply because none of them were worth owning, or were already on PS3/360 for less.
But between now and the end of this year, we'll have Pikmin 3, Wonderful 101, Wind Waker HD, Sonic Lost World, DKC:TF, and Super Mario 3D World. All exclusives, all games I definitely want, and I'd wager many feel the same.
Then going forward into 2014 we're promised Smash, X, Mario Kart 8, and Bayo-motherfucking-netta 2. I'd say the above, coupled with the handful of quality release period games, constitutes a pretty robust library before we've even gotten to the new Zelda or Metroid, or resurrection of any number of Nintendo franchises, or future third party offerings over the years to come.
If you're unable to overlook the stigma of Nintendo hardware or permit yourself some shred of Sony/MS disloyalty, then by all means enjoy any sour grapes you intend to consume, but good times are definitely ahead for Wii U owners.