Just wanted to share my views and opinions. I am a very basic user. I use it only as a wrist vibration bluetooth notifier for txt, call and g-mail, and a daily step counter. On weekends I use the GPS to track my outdoor trail hikes through the oak / redwood forests. My screen is never illuminated unless I am actually interacting with it. Everything else is turned off and deactivated in an effort to streamline things. That's it... about as simple as it gets.
Smart watches are really just scaled down laptop computers. Just like a laptop you have to manage and maintain the OS, software applications, on and off line connectivity. You have to set up/manage user accounts on line. Google WearOS and various installed software apps get on line updates, and there are on-line support communities and forums for these. There are passwords and various forms of personal information you have to manage as well.
Just like a laptop computer you have to manage power usage. The more software you run and the brighter you illuminate the screen the less battery life you get. Of course YMMV but for me ~1.5 days of battery is typical. So I must charge it every night.
Overall I am happy with the experience when the software works as expected... just like my HP and macbook pro laptops. While it works for me, I find it difficult to recommend it to just anyone...