Exactly. When my friends/strangers ask me about my watch they always ask if I NEED to have one. I always tell them the same thing-the Apple Watch makes my day better/easier and I like the look and feel. Do I NEED it? No, but if I'm not wearing it I feel it's absence. I've also gotten way more random people asking me about it then any other device I've ever owned. Strangers will walk up and start conversations with me when they see it on my wrist.
I had a conversation along these lines with my friend the other day. Our conclusion was that it seems like a neat thing to have but so far there isn't anything that makes people say 'I MUST have this!'
I thought maps/navigation were the killer app for smartphones - for many other things you could use a laptop instead, but being able to use your phone to navigate was just so damn useful that you'd be a fool not to buy one if you could afford it. Neither Google Glass nor the Apple Watch seem to have hit on a magic thing that they do so much better than a phone, so far.
I will tell you that using Apple Maps for directions while using the watch is great-it knocks on your wrist in one way to alert you that you're going to need to take an action, then it vibrates in a different way to tell you to turn right or left, or continue on straight. Its a small feature but when you're driving someplace busy or walking down an unfamiliar street its really very nice to have this kind of feedback without taking your eyes off the road/sidewalk.
It took 3 years after the iPhone came out to get turn-by-turn navigation, though. Google Glass has been around for about 3 (although I've heard it actually does have some killer apps among surgeons & firefighters and stuff), but the Apple Watch just came out last year.
For me it would need a large flexible screen on the palm side. This would be much more comfortable to use and with a camera would allow video calls and selfies (if that is your thing). Also, being able to hold it up to the horizon would allow map directions with an augmented reality feel. The other (normal) side of the watch could have had a tradition analogue clock face.
I actually bought an Android Wear watch for the maps. I ride a bike, and having a watch tell me what direction I should turn next and buzz me when the turn comes up is actually pretty useful.
