No voice acting because it would be impossible for them to do it justice, with current technology (including everything up to PS4, and even PC).
Text works fine, and while it does make you feel a little less "immersed", all it requires is good spelling and good writing, things that Nintendo do more than adequately. To make voice acting work, there's so many more factors to account for, and even one being a little out will make the game feel wrong.
Same reason, by the way, why I never want Zelda to go hyper-realistic in graphical style. It's basically a variation on the Uncanny Valley effect. Until and unless they're able to do voices in such a way that it feels indistinguishable from real world quality, including in terms of animation, they shouldn't do it in Zelda (as it's unnecessary to include voice acting - VA should only be done in games where it's necessary).
To see a classic example of voice acting rather ruining something, consider the famous Final Fantasy X laughing scene.
All that being said, a solution more similar to that of Animal Crossing wouldn't bother me. It's more sound effect than voice, anyway. Kind of like how they did the voice of Midna.