Reasons I've *thought* about getting an Apple Watch but haven't yet:
* No camera. There are places where it's not acceptable to wave a camera around, but where the watch notification would be enough to tell you whether you need to step outside to follow up or not. Also convenient for ... wait for it... checking the time without having to pull out your camera. (Crazy talk, I know)
* "Buzz" differentiation: My phone vibrates in my pocket. Was that a "cliuck ehre for freez viagrass!!" email, or something I care about. Sub-second to glance at watch, maybe a second or two to pull out phone & look. I multi-task, and people need to learn to deal with that, but I accept that glancing at a watch is perceived as less attention diversion than pulling out a phone.
* Health data: I run, and having the various heart rate, etc. data easily relayed to my phone would be nifty. Not life changing, but easier than dealing with a fitbit or similar non-ecosystem device or having to strap on a chest-based Bluetooth heart monitor. (Downside: At least last I checked, the data was NOT available realtime to Nike+ app whereas chest strap is. So it's historical data for later, not your heart rate just hit redline, time to slow down NOW).
Reasons I haven't bought one:
* I haven't had a watch tanline since 1996. Not looking to get one now.
* COST. Really tough to justify the price for the limited utility.
* The opposite of a rich interface. iOS screen-based is reasonably good. Not as useful as a keyboard for a lot of things, but "good enough" that I can remote in & save the world from my phone when I really need to. Watch doesn't add any functionality (except health data, and that's limited by delay) that the phone doesn't already do in some fashion. Tough to justify cost + extra *thing* to deal with and not get any additional capabilities for it.