For me, the Apple Watch is about reducing notifications to mere glances at my wrist. That instead of interrupting what I’m doing to pull my phone out of my pocket I can at a glance categorize what, if anything, I need to do in response to that notification. That and always accurate time to me was worth getting a watch. I upgraded from a series 3 to a series 6 when the sensor tech advanced enough to convince me to update. The 9 has some new stuff, but not enough to convince me to upgrade.