That doesn't work if you are a physician on call. . . or many of quite a few other professions who need to be available 24/7. That's what makes you one of the ones who doesn't get what makes the Watch a game changer for those who do get it. Read the article.
Granted, there are a few, a very few, people where instant response is a desirable thing. But for the vast number of other people... my statement stands.
My sympathy to folks who have allowed themselves to become a slave to technology.