Not to be "that guy" but I called this turn of events before the system ever launched. There were just to many problems with it. To avoid fanboy disapproval I will state now that the system is not inferior but the circumstances were bad. To start with $250 is a lot of money for a handheld anything. For that price most people want a home console.
Next you have the fact that while many people like 3D many also staunchly hate it! While I am able to understand that the 3D can be turned off there are many who wouldn't buy a system who points to that as its main selling point feeling like their none 3D counterparts will be less fun as something is missing even if what is missing is by their own choice.
While the game line up is "solid" it is also stuff that we have seen before. Zelda remake, Starfox remake, etc. Not everyone shares the love of old titles that many of us hold dear to our hearts and then there are those of us like myself who want the original; not a remake of any kind. (maybe if it was free/cheap but not for the price those games ask)
Then there are those people again like myself who feel mistreated and jaded towards nintendo. I am quite discerning about which games I choose to play. They don't all have to be 9-10 rated games as I find I dislike many of those "good" titles but they must bring something special to the table. I don't play games to fill the time. I make time to play the games I will enjoy and Nintendo has been short on those lately. It seems that since the passing of the SNES no system from nintendo has been able to cater to my needs. I still own an N64, a GC, a Wii, and the handhelds but glancing at my libraries I can't help but see a difference. PS - 40 games, N64 - 14; PS2 - 52 games, GC- 11; PS3 (which I only just purchased) 19, Wii 8. Every generation there are fewer games from nintendo and so I have created a rule that I now see others following. I won't buy a system from nintendo until it has 5 exclusives that I "must" play. This can take years for them to give me and so far there is nothing that I have to play for the 3DS that I haven't already played somewhere else. The Wii U is going to have the same problem. They are pitching games that I have already played on other systems so why would i buy another system with what looks like a worse controller just to play the same stuff again?
Nintendo has fallen as a gaming leader. Nintendo is not without great ideas. But if they don't start sharing them then this next generation might be their "last story". Congratulations if you got the reference. If not take this with you. Nintendo refuses to produce an exclusive title and ship it to the states unless it will make a certain profit that is far higher than the profits that most others make. As a result of this greed they have started to lose loyal customers and may soon meet their downfall. I'm not claiming to know everything or anything really about video games or the way business works (although I spend a good deal of my time with both) but so far I have predicted many things correctly about the industry as a whole because I have eyes and ears and unlike our favorite gaming giant of old...I use them.