The Apple watch will be totally obsolete and incompatible with everything inside of five years. It's soldered-on and nearly impossible to replace battery will likely run out of charges in far less time than that. These are not heirloom items. They're disposable. As such, I don't expect the same kind of build quality from an Apple watch that I would from a mechanical watch. That they do offer good build quality for the money is therefore totally unexpected and rather nice.
That being said, I'm still waiting for the killer app that makes me want one of these. As a fitness tracker and GPS watch they're inferior to what's out there (chiefly because the Apple watch relies on your iPhone's GPS). I don't do workouts with a phone in my pocket. Also, so far it's unclear if the Apple watch is waterproof, and it had better be to have any use at all in this market! For almost all other applications, the effort of working with such a tiny screen and different interface outweighs the trouble of reaching into your pocket and pulling out your phone. If I want eye candy on my wrist, I'll dust off a mechanical instead of buying something that will be junk in a few years.