People forget how long it takes a new platform to develop. It took Android about a half a year to sell even a million units (Apple Watch is reportedly at 11 million). The first phones were frankly not very good: it wasn't until the Motorola Droid and Samsung Galaxy that Android started to get significant market share (see http://imgur.com/nPgiS39). New platforms always develop in fits and starts.

So what am I excited about, with Apple Watch? Think about the health implications of 11 million people wearing heart rate sensors:

1) About a quarter of all strokes are caused by abnormal heart rhythms, which are easily treated but often go undiagnosed for years. How many lives could we save just by building an algorithm for just this one problem?

2) Heart rate variability is correlated with everything from stress and depression to sleep apnea to dangerous heart rhythms to irritable bowel syndrome. Can we build tools to help us understand our inner world in as much detail as photo sharing apps have helped us map our external world?

3) We spend about a third of our lives sleeping. How much more productivity and creativity would we unleash if everybody could use data to get a good night's sleep?

4) The world is full of advice on how to exercise (should you get 10,000 steps? High intensity interval training? Yoga? Crossfit?), but what really works? More importantly, what will work for you?

5) About a quarter of Americans have pre-diabetes, but only 4% have ever been told that by a doctor. Medical research has shown that your pattern of heart rate variability shifts in the early phases of insulin resistance. Can we prevent the next generation from developing diabetes?

Those applications will take time to develop, and Apple Watch is quite clearly a first-generation product, so I can see why people are disappointed. But I think it's worth remembering that even with the iPhone, it took Apple two years to go from the first version to the iPhone 3G.