I would say I'm quite a power user usually. I very carefully explored every feature my apple watch has and tried to incorporate as many of them as I could. Very, very few features stuck because they were genuinely helpful. Almost everything being pushed is a gimmick or a feature bullet point from some product manager.
The actual good stuff:
Time
Workouts
Payments
The occasionally useful stuff:
Notifications
Noise DB levels to see if I need to put on ear protection
Workoutdoors app for on-device maps and path breadcrumbs
The once in a blue moon stuff:
Music controls and on device playlists
On device audiobooks
Weather complication
Voice memos
Alarm
Shortcut to call my husband
The feature I tried to get working but gave up on: Tap to talk to ChatGPT and get a 100 word or less reply