This isn't specific to Apple Watch, it's about all smart-watch thingies: the way we interact it them is just too limited. The screen is tiny, so you cannot use it to read / watch content, and there's no way of interacting it except for clicking a very limited number of buttons.

Though the voice recognition interface on some of them is kind of ok, it's not private or exact enough to make it actually useful.

We have the technology - we can built it - but why? There's still not a "killer app" nor a "killer UI" for a smart watch.