I don't have a lot of use for the Apple watch myself, but it's been great for my wife. She, like a lot of women, regularly wears clothing without pockets that can hold her phone, and puts her phone in her purse.
Having your phone in your purse radically changes the value of the watch. She used to often miss notifications, and sometimes calls, that she couldn't hear or feel. And even if she did notice them, digging your phone out of your purse is considerably less convenient than taking it out of your pocket.
My wife is a doctor and doesn't carry her phone around during the day when seeing patients. It sits on her desk back in her office which she rarely enters except at lunch and at the end of the day. After seeing my watch and talking to patients who have them, she decided she wanted one. Having the watch means she can get text messages throughout the day and if needed, quickly respond in the few minutes between patients. It's a total game-changer because if there's something going on with our kids or I just have a quick question for her (e.g. "Do I still need to stop by the store on the way home?") she gets the message right away and is able to respond.
That comes back to my core opinion on smart watches: notifications are the core. Everything else is feature creep. Imagine shopping for Bluetooth headsets - do you want one with biometrics and a backup radio antenna and a microSD slot for playing music without its phone, and a one-day battery?
Or do you want a good quality mic and earphones with a solid Bluetooth connection, and a week-long battery for light use?
I want the latter. Apple's take on smart watches is the former.
I don't want a "smart" watch. I want a Bluetooth notification watch. Very specific purpose. That's what Pebble made. It's a shame it didn't work out.
Having your phone in your purse radically changes the value of the watch. She used to often miss notifications, and sometimes calls, that she couldn't hear or feel. And even if she did notice them, digging your phone out of your purse is considerably less convenient than taking it out of your pocket.