Well, I do that now sorta on my watch with its small screen. I scroll through notifications, but no, I don't get the full FB web or mobile experience. I'm not sure how many people actually want that; I often hear complaints about how phones and apps aren't simple anymore. I also believe that we really haven't figured out the best way to use these small screens. I'm surprised at how usable my watch is sometimes with its 320x320 screen at 1.8". For reference the original iphone was 3.5" at 320x480 resolution.
For teens and such I can see the big phone never going away but for most adults, having an inconspicuous wearable just seems like a more refined experience. I imagine there's a logical procession here from desktop > traditional laptop > ultrabook laptop/convertible > tablet > mobile > wearable. You lose functionality with every step, but depending on the use case, it doesn't really matter. For people in my peer group, a wearable that could work without a phone would sell like hotcakes.
For teens and such I can see the big phone never going away but for most adults, having an inconspicuous wearable just seems like a more refined experience. I imagine there's a logical procession here from desktop > traditional laptop > ultrabook laptop/convertible > tablet > mobile > wearable. You lose functionality with every step, but depending on the use case, it doesn't really matter. For people in my peer group, a wearable that could work without a phone would sell like hotcakes.