The best use I got from my Apple Watch was to use the companion app of my gym routine tracker (to track current loads and personal best) and play music so I didn't have to bring the phone to the gym.

That was it, I got extremely annoyed by notifications so over time just disabled them. Also for some reason the heart rate monitor glitched a couple times, got alerts about my BPM at 180+ while I was sitting on the couch.

Eventually I just stopped using it and now sits in some drawer.