Nintendo's core relies on there Mario games, which are pretty up to par. however, they are extremly easy to beat and dont have enough to them.
Finishing Mario Galaxy 2 is harder than a lot of popular PS3 games. Mario games aren't "extremely easy" as a rule at all. Maybe if you had actually played some you'd know.
And Nintendo has other successful franchises,
Pokémon,
Star Fox and
Pikmin for instance.
...
Nintendo isn't hated. The problem is the Wii, which is lacking as a console for a lot of devoted gamers. Firstly, the graphics are way behind the competition - which matters a lot to a certain base, and while they're not essential, who doesn't like some quality visuals with their games? In the end graphics don't make a game, but they certainly help create an interesting world.
Even Nintendo knows that, Mario Galaxy and Skyward Sword certainly aim to create impressive game worlds within the Wii's limitations. It's why they take the cartoonish approach - if Nintendo were to make another Twilight Princess-like gritty Zelda, they just wouldn't be able to deliver to a gamer base who's seen gritty done with insane detail in the PS3 and XBox.
The Wii ends up being looked down upon as a lesser creature, the "family" console for gamers who don't know what they're doing, because it doesn't have all the games with high ratings on IGN, but it does have a million variations on the Wii Sports formula.
Almost all the best Wii games have come from Nintendo themselves. This happens for two reasons:
A. The technical limitations just prevent a lot of titles from being on the Wii, and those that get there are utterly neutered. Visuals are inferior, controls are and untraditional and the motion aspect isn't good enough to justify it, online multiplayer is either primitive or simply non-existing. So a great Wii title would almost certainly have to be made especially for that console, and forsake the market share of the other two for no real promise, since the large casual share of the Wii buyers isn't interested in a lot of games.
B. Nobody knows how or really wants to make the effort to implement the motion controls interestingly apart from Nintendo, who are pushing the concept. There's just no market in doing that when you can make games with the traditional controls for the other consoles, and when the casual base that the Wii appeals to doesn't demand that great a level of innovation.
The Wii can't live on an almost exclusive diet of Nintendo-made games. Skyward Sword came out
last November. They don't even care anymore, it's all about their next misguided console that's the graphical equivalent of its seven-year-old competitors.
Oh, yeah. That's another reason. The Wii U and its bold move to incorporate new technology into gaming that you've NEVER seen before except in every iPad game ever. And either playing with one more screen than human beings can physically focus their eyes on, or without a TV. Whoa.