Yeah, it is you, not them. Why? Because I LOVE the Wii. I love the controls, I love that it's not the "powerhouse" console, I don't find it choppy, I do find it fun, and I find the games much more enjoyable than anything I've played on the other consoles. If Nintendo sucked, people wouldn't still be playing their systems. The fact people do, even when they're known to be relatively underpowered hardware/graphics-wise, should be an indicator that many people still like what they're doing.
Now, the fact you don't enjoy Nintendo anymore? That's fine. They don't suck. The fact that they're still around after all these years, long after so many of their competitors have gone out of business (or at least left the console business), and their only competitors are brands that are in pretty much EVERY electronics and computer market with a lot more money behind them (where Nintendo is JUST video games), should be a clear indicator.
I like that Nintendo isn't sticking with the status quo with regards to gaming, and are looking to change how people play their games (to the point where their competitors felt that they had to develop and release their own versions when they previously said they had no interest).
Hell, Nintendo dominated the portable gaming market from the time they put out the first Gameboy up till the popularization of the iPod Touch/iPhone, and are still putting out quality hardware (including the first portable system with no-glasses 3D screens).