I recently switched from a mechanical watch to Apple Watch. Here's why: First, I wanted metrics on sleep and exercise to manage against (how am I allocating my

I recently switched from a mechanical watch to Apple Watch. Here's why: First, I wanted metrics on sleep and exercise to manage against (how am I allocating my time) and better understand how to optimize performance (e.g. even one beer has noticeable impact on rest). Second, I want an easier way to get a subset of notifications without picking up my phone. My hands are full with work or family most of the day so this helps me be responsive. Third, I want the first two without granting wholesale access to all the data. Works pretty well, the big annoying downside is it's one more device to charge.