Allow me to present a dissenting opinion.
I've found my Android Wear watch very practical. Maybe the UI could be improved, but the existing Wear UI based on simple swipe actions is a damn good effort and works well. I actually don't see a need for major changes.
Main uses I get from the watch:
- Telling the time. Why do you think wristwatches were invented in the first place and took over the market from pocket watches? Our phones are now our pocket watches. Any time I leave my wristwatch at home nowadays I find myself glancing at my wrist... oh... dig phone out of pocket, turn on screen... yeah that sure is just as easy as glancing at the wrist. No benefit to a wristwatch here at all...
- Receiving messages. Recieve an SMS, glance at the wrist and there it is. The majority can be dismissed with a flick of the wrist. If a response is warranted it can be made by voice dictation in a fraction of the time it would take to pull the phone out of the pocket. And the voice dictation is good! Less error-prone than the auto-correcting on-screen phone keyboards my friends seem to use (based on experience of trying to interpret their messages).
- Sending messages. The number of times I've been stuck in traffic and fired off a quick SMS using my watch's voice dictation feature without having to use my hands (illegal here).
- Customisable watchfaces. I can add whatever data strikes my fancy to my watch, which I'd probably never be able to find in a traditional wristwatch. Examples: ISO week number, 12 and 24 hour time, UTC time, sunset and sunrise points indicated on the dial, current weather report... All while looking beautiful like a traditional wristwatch. Do I need to take an umbrella with me today? Just glance at my watch. Sounds silly until you try it. When working in project management, glancing at the watch to get the week number is so handy. Doubtless there is a mechanical watch somewhere out there with ISO week, but does it have all the other features? Likely not. Point is I can make my watch work how I need and want.
- Apps. Stuff I could do on a phone, but it's so much easier on the watch. Like whipping out a calendar when discussing meeting/operational dates. Even checking my bank balances to see if I need to move money around before a big purchase--takes two taps to the screen. Done before I could have even got my phone out of my pocket.
- Novel applications which could never be done with just a phone. Guess what one of the best features of my smart watch is? It acts as a viewfinder for the camera in my phone. This is invaluable when trying to see the cabling behind some networking gear poorly packed into a rack, for example. I was on-site with a colleague just the other day, and this feature blew his mind. Sure I could find some remote camera hardware to serve the purpose, or fiddle around with a mirror on a stick, but this feature is there *in the watch already on my wrist*.
I've only scratched the surface here of all the smartwatch features I use on a regular basis.
If you've never used a smart watch then don't be so quick to dismiss its usefulness. If you have and disagree, I respect your opinion. But for me it all comes down to convenience. Sure, I *could* do many of these things with a phone. But nowadays I hardly ever take my phone out of my pocket except to answer calls. Smart watches have reached the point where they are unobtrusive and highly functional. In my opinion they are right in the sweet spot.
As to the people moaning about having to recharge it every night... how many of you wear your conventional wristwatch all night? Or do you take it off and put it on your nightstand? Thought so. Well, you do the same with your smartwatch, and it stays charged. There are zero instances where lack of battery life has been an issue for me with either of my smartwatches.
Disclaimer: I haven't used the Apple watch. My experience is only with the Moto 360 and G Watch R, both of which run Android Wear.