I don't have an Apple watch, though I probably have every other thing Apple makes, so I have no idea it's true functionally, but here's a new TV spot that shows how Apple sees it used by people. Clearly, fitness is a big market but not the only. The functionally may be oversold here (don't know) but as usual with Apple ads, it's nicely human.
https://www.youtube.com/watch?v=N-x8Ik9G5Dg