Here's why:
Monster Hunter
Mario Kart (Terribad lineup btw)
Wonderful 101
Super Smash Bros 4 (someday, diva dev removed the story mode, dead game)
Nintendo land (free)
Pikmin 3
Awkward and not a good controller
Terrible marketing, thus several users still don't even know it exists
Xbox One and PS4 have arrived, time is up.
3rd party support is still very little and several have entirely given up.
Do you think all next gen consoles are bad (except 3DS)?