My wii collected dust for about six months before I sold it on ebay. Mario Galaxy, Mario Kart & Zelda: Twilight princess were great, but after I beat those I was done. I think the biggest thing is the online presence. I'm spoiled with Xbox Live, so both the Wii & PS3's online does nothing but disappoint me. Wii friends codes are terrible.. I understand it's good for kids, but I'm not a kid. My niece & nephews have a Wii, but meeting up online to play MK was a nightmare. Once you're friends, you should be friends for all games. Having each game have a unique code you have to distribute ends up not being worth it.
At the time I sold it, they were still impossible to get and actually made a profit. I may at some point get it again but I'm waiting to see games that interest me. I love the classic games, but I have a media center pc setup for my tv & play the roms for free.
I'm actually thinking about selling my PS3 now, as I have a blu-ray player on my laptop.. I'm looking forward to God of War III, but can't decide if I should sell my PS3 now and get a new one next year when the game comes out & the console's price is cut. Also, not sure if owning the system is worth one game I'm looking forward to.
Don't expect to see Goldeneye or Perfect Dark on the Wii's VC. They were developed by Rare, which is now owned by Microsoft. There were rumors about Goldeneye coming out on the XBLA, but last I checked that fell apart.