As a general supporter of the company, I've already resigned myself to seeing this as a "Gamecube" generation for Nintendo.
That said, I'll still be getting the system because I know that over its lifespan it will have some amazing games, not the least of which are:
Pikmin 3 (I would buy the system for this game alone)
3D Mario
HD Zelda
As long as they keep releasing new and inventive versions of its main characters, I'll be on board. And that's without even taking into account the games I'm not even expecting.
With the Gamecube, for example, the draw for me was Melee and Wind Waker, but then there was also Eternal Darkness, Metroid Prime, Paper Mario (TTYT), Pikmin, Pikmin 2, Resident Evil 4, etc. that made the Gamecube a very memorable gaming generation for me.