I also believe that Sprite based games have aged much better than 3D games...up until this point.
Look at really good 8 Bit era Nintendo games. Yes, look dated, but the good ones still were able to get their visual vision across although it is a bit limited. But jump to the 16Bit era and all of a sudden it seems what developers want to get across visually with sprites they can with hard work and great programing. Some games are still quite stunning and beautifully rendered in 2D sprites are works of pure art. Super Mario World 2: Yoshi's Island, Chrono Trigger, (That 7 up Spot game), Legend of Zelda: Link the Past, Street Fighter 2...the list can go on.
Now, does that the 3D generation will never be able to age as well as the 2D...not at all. I think with this current generation, and definately next generation we are getting 3D games that will be visually stunning even in the future. But you are using much better technology, and those SNES 2D games are still aging well and still looking great.
Sprites just seem to allow the artist and the art to have more personality and expression within the characters and images...and until recently, 3D animation just never compared.
Hell, look at traditional cell animation to modern 3D animation of Pixar. The Cell animation still has more personality, and artistic expression than the greatest 3D animation of our time.