I have one and like it. Nice to have assorted information right there without having to dig out or find the increasingly larger phone. Great to have it monitoring physical activity, giving a psychological push to do a little more every day and think about what I'm doing - "fitbit" but better.

A nice watch can easily cost the same as an Apple Watch, which will tell time more accurately AND have lots of other nifty & useful functionality. Watch is what "smart watches" have tried to be for decades, but this time got it right. A few small design improvements, and like the iPhone a large fraction of the population at large will have one.