As far as I understand, what most people want from Nintendo is to announce the new Zelda during the making. In other words we want Nintendo to change their recent policy of presenting games a month before the release date. I'm afraid that this will not happen anytime soon. But on the other hand, what would it be different if we could see a few screenshots? We know they're working hard for these titles.
Maybe Nintendo don't want to show their 'new generation' Zelda to anyone and get copied by other developers.

How is choosing an event that is appropriate for the demographic they're targeting "Not Caring" about their customers?

Nintendo has released more games in such a short timeframe that targeted their loyal customers (Super Mario Galaxy, Mario Kart Wii, Super Smash Bros. Brawl, Metroid Prime 3, The Legend of Zelda: Twilight Princess, Super Paper Mario, Mario Strikers Charged, Fire Emblem X: Radiant Dawn and Battalion Wars 2) ... They have released so many of their Big games that people were upset that they haven't demonstrated sequels to huge games they have already released.

At the same time, people are constantly talking about how third party publishers are "Struggling" on the Wii ... So as the Wii sees (much) more information about quality third party games why should Nintendo announce games that aren't going to be released for a year and push these quality third party games to the background?

I am not sure what you mean.  Would you like to explain to the hundreds of people who attended E3 that they are the wrong demographic for the convention?  I would enjoy seeing that at any rate.

A short time frame?

MKWii - 4/27/08
Brawl - 3/9/08
Fire Emblem RD - 11/5/07
BWii - 10/29/07
Super Paper Mario - 4/9/07
Super Mario Galaxy - 11/12/07
Metroid Prime 3 - 8/27/07
Mario Strikers Charged - 07/30/07
Twilight Princess - 11/19/06

So you've listed one 2006 title, 6 2007 titles, and 2 2008 titles.  Where are the rest of our 2008 titles?  And since when are Fire Emblem and BWii "big name" games?

I'm still trying to fathom WHY people sell their systems. You have a PS3, so just play games on that until good ones come out for the Wii. o.O

I still own every system I've ever had. My NES, SNES, Genesis, N64, PS2, Gamecube, Wii, Gameboy, GBA, GBA SP, and DS Lite.

First off, I could have added games like Mario Party and Wario Ware but (for some reason) I didn't think that people who constantly bash the Wii would accept games like that as "Big Titles"

Let's look at it from another perspective ... the PS3 has been out for the same ammount of time and how many long standing (well selling) exclusive games has Sony developed for the PS3 so far? How many of Nintendo's long standing (well selling) exclusive games have not been released for the Wii so far?

You can bitch and whine all you want, but Nintendo has released a similar number of big titles in 18 months that it took 24 to 36 months to get for the Gamecube.

No becuase Nintendo does not attend TGS.

They may have their own event in October.

Nintendo does not go to TGS. However, they usually have a completely Nintendo event around a similar time frame.

I don't really care about the PS3's lineup.  To me that's like saing that getting a D in school is okay because the other kid got an F.

As for the Gamecube, congrats, it's outdoing the Gamecube.  Whoopdy-freaking-doo.  Set the bar any lower and you'd be eye-to-eye with a hamster.

Nintendo is probably the only developer anywhere that can carry the weight of an entire gaming system on its back.  If gamers expect more from Nintendo it's because we have faith in Nintendo and believe that it's a company capable of delivering things that no other one can.  And this generation, Nintendo has the financial health to do it... and then some.

Nintendo doesn't go to TGS.

They likely will have their own event around that time though.

I wouldn't say they announced Pikimin. More Miyamoto mentioned off hand it was in development.