I hate the Wii as much as the next man, I don't think anyone can argue that it compares to the other offering this gen. It is rediculessly underpowered, lacking the technology that is REQUIRED to make a decent console this generation.
But I think people need to look at the Wii differently. I keep hearing two sides to this debate, there is the majority of gamers who have either sold their Wii or left it to collect dust and have bought a 360, they hate the Wii and they hate the new direction that Nintendo is going in with the Wii console. Then I hear the dellusional and irrational Nintendo Uberfanboys who, despite Nintendo crapping on them again and again, just keep coming back for more and defending the Wii. Face it guys... the great games AREN'T coming, just more disapointment. They hate the 360 and the PS3... well actually they hate any console not made by Nintendo.
But both of these groups are looking at the Wii the wrong way. Ok, so sure, we are all aware that Nintendo no longer cares for its core audience. They have seen the casual audience is the best and easiest way to make money. I blame this on a couple of things.
Firstly, what no one seems to notice is, when did Nintendo first start to to develop this anti-hardcore attitude? About 2002-2003. Now, I love the Gamecube it was a great console with lots of quality titles, but despite this, it was during the GC era when they first started to act like this. What changed at Nintendo around this time? Satoru Iwata became preident of Nintendo in 2002. The Wii is the first console that has been developed while Iwata was president. Coincidence?
But can you blame Nintendo? Sure you can. But don't forget that despite the economic situation, Nintendo are doing better than ever before. Nintendo saw the success of the PS2, a casual console (don't try to deny it, as much as people would like to believe, the PS2 was severly underpowered in the sixth generation and attracted a huge ammount of shovelware). And they saw how the Gamecube, a console aimed at gamers, was for the most part a failure.
The fact is, whoever makes the worst, most underpowered, featureless crappy console will always come out on top. And Nintendo knows this.
Now instead of just bashing the Wii for being a terrible console, try to look at it from this perspective...
Although the Wii is lacking 90% of this generations top third party games, Nintendo consoles will always get some amazing exclusives. You can't get Super Maro Galaxy, Metroid Prime 3, Brawl, Twilight Princess, Super Paper Mario, Mario Kart Wii ect. on the 360. The Wii still has a lot of excelent games to offer.
Yes, you can't get the best out of this generation with just a Wii, you would miss some of the best titles. But equally, you can't get the best out of the generation WITHOUT a Wii.
The great games on the Wii are only on the Wii, and that makes the Wii an essential purchase this gen. I think for the first time, you NEED more than one console to get the majority of good games out now.
tl;dr : Wii60 FTW!