Got my Wii in February 2007.
Last time I played it was last night (my wife and I are playing through Dokapon Kingdom's Story Mode) and we played through 4 weeks last night taking us up to somewhere around 90 weeks total (so about 90 minutes last night). I still want to finish Little King's Story soon and tomorrow (Friday, Novemeber 20th) I am planning on purchasing New Super Mario Brothers Wii. So my Wii has been seeing use and will continue to see use. Of course it is also the only current gen system that me and my wife own (previous gen consoles being PS2 and PS1).
But there are other games I am looking forward to on the Wii as well including:
Final Fantasy Crystal Chronicles Crystal Bearers (December 2009)
Arc Rise Fantasia (Summer 2010)
Dragon Quest X (TBA--hopeful for Q4 2010 but likely 2011 especially in America)
Zelda Wii (TBA--maybe a 50/50 for Q4 2010)