For me the Wii was an impulse buy! I like the wii I really do but I feel like I got caught up in all the hype and bought one too soon. Honestly most of the games for the wii have been pretty horrible so far or have slapped on wii controls that just don't feel very impressive. Also I didn't and don't expect next gen graphics but there has not been a single game I've played yet that has impressed me graphically. The system is just lacking to many essentials as well such as online multiplayer from the start heck I would have been happy with a simple old school pc tcp/ip user hosted games until they worked out there online structure.
I just think the system is going to continue feeling like an impulse buy until developers create better games that are not last gen ps2 ports, with lazily slapped on wii controls, and have online gaming.