I like that I can actually take calls on my watch. I have been on the tennis court where my phone is in my bag off the court and I was able to confirm a doctor's appointment with my watch.
I like that I can read notifications from just about every app. Some apps with picture attachments actually show up on my watch.
I like that with Home Assistant actionable notifications, I can actually perform those actions right from my watch.
I turn off "Hey Google" detection, but I can just long-press the button above the crown and ask Google a question.
I'm sure other watches can do this stuff too, but I've liked this watch a lot. Battery has lasted all day. I generally charge it when I'm watching TV at night and then wear it all night/day.