I don't hate the Wii. It hits it's target audience square on target, this being, in no particular order, old people, people with short attention spans, and Nintendo fanboys. Why will I never buy a Wii? Well, let's start with the fact that I'm a PC gamer, then move on to the fact that Wii games look horrid. How about the fact that Nintendo is still catching up with the times and starting to realize that a significant portion of gamers are between the ages of 19 and 34 now. Unfortunately, most of the "adult" titles that come out are either terrible ports (Scarface, the CoD du jour), or treat adult themes in such a juvenile manner that it's impossible to take them seriously (No More Heroes, Mad World). Finally, let's talk the Wiimote. It's gimmicky, prone to malfunction, requires recalibration every time you lean a few inches to fart, and isn't nearly as much fun as we're led to believe. The controller is a neat idea, but so tragically flawed in it's execution, it's no wonder it's shoehorned into every game on the system whether it needs it or not. If they gave people the option to use a standard controller for the games, the Wiimote would quickly be forgotten and the system would have to stand on it's own, sans gimmicks. So yeah, like I said, I don't hate it, I just don't enjoy it, and wouldn't buy it.
Also, why I personally have a problem with casual gamers is thus. I have been a gamer all my life, I was playing commodore 64 games in diapers. I picked up pen and paper role playing in high school, and all I ever heard was how nerdy it was, and no one who could get a date played games. Now all of the sudden, the guy who picked on me in high school for being a nerd is playing games and has the gall to call himself a "gamer". It's not a good reason, perhaps, but I think that if you think about it for a moment, you'll at least understand where I'm coming from here.