3DS is awesome because it has awesome games, but also, I was very impressed the first time I saw Ocarina of Time 3D on movement on that little screen, and the 3D made a really impressive feel of depth, that was by far the best graphics I had ever seen on a portable device until that moment, granted I didnt had to wait too long until I saw something better, but I dont see how is so incredibly outdated, specially for a small 2 screen device with 3D capabilities on 2011. I still have the first 3DS model, the little one, and I think most games look really good on that screen, I have seen that on bigger models it doesnt look as sharp but is far from bad.
Also I want to remember:
A link Between Worlds, Luigis Mansion 2, Fire Emblem Awakening, Pokemon X/Y, Monster Huner 3 & 4, Mario 3DLand, Smash Bros 3DS, Braverly Default, RE: revelations, Animal Crossing New Leaf, Mario & Luigi Dream Team, Shin Megami Tensei IV, Mario Kart 7, Fantasy Life, Ocarina of Time 3D, Majoras Mask 3D, Proffessor Layton VS Phoenix Wright, Stella Glow, Zero Escape, Yokai Watch, Persona Q, Kirby Triple Deluxe, Hatsune Miku, Cave Story 3D, Kid Icarus Uprising etc etc etc
You know... games. Good games.
And a great indie support on top of that. 3DS is a worth while system and is not more outdated than the GB, the GBA or the DS were, and those were great machines. Because you know. Games.