Apple watch starts at $350 for a bare bones model & goes up to $17,000. (You can buy a new iPad mini for $399.) That's way too much to pay for a watch that's essentially a notification system that you currently get on your iPhone. Plus, consider all the limitations & flaws that are typical with first generation devices.
Tech nerds/reviewers have said there's a huge learning curve that takes at least 4-5 days for even the tech nerds. Out of the box, users have to fiddle with numerous settings to make the watch useable, thus cutting the target audience even smaller.
All this watch will do is push people to "new heights of narcissism" according to the New York Times.