The problem I find with the Wii, one that also applies to the Kinect, is that motion controls are just...awkward, to me. That, and the Wii versions of games released on other consoles tend to have pared-down content when compared to their cousins. Case in point, The Force Unleashed...least, from what I've heard. The overhead of motion-sensitive controls has to be taken into account somewhere, and it seems to be overall content that suffers most often.
Now, to the general pissing contest between Nintendo, Microsoft, and Sony... I don't really give a shit what you play on. You use whatever system works best for you and has games you like. The lines of actual, appreciable difference between the consoles are blurring with each new iteration...eventually, its only going to really come down to what logo is on your system and the splash screen when it boots up, minus some exclusive titles and shit. Hell, the 360 and PS3 are already pretty much just pared-down PCs with specialized peripherals and operating systems.
But, this is turning into a rant, sooooooo... What do I, personally use for gaming? My console of choice is the 360. But, the one gaming machine I will always have around in some way, shape, or form...is a PC. Its more modular, more upgradable, and has flexibility that consoles simply don't have. Remember, PCs almost always get the modding tools.