Well I do use the AoD since a watch's intention is to tell the time and it's useful. It doesn't always wake up on wrist raise so having it enabled is convenient.
It wasn't terrible, I'd get a day or day and a half tops. I had other reasons as well (I prefer Samsung phones) and the square display feels very outdated these days. I guess I got used to the round watches. Also hated there being both a crown and a side button. I'd have preferred one button, either a side button, or just the crown centered properly. I never could adjust to the UI navigation of Apple Watch and it made me get frustrated. Naturally, I'd expect to be able to bring up control center or notification center with just scrolling the crown, but that never worked. I hated touching the screen and making it grimy. Samsung you can do everything by voice and rotating bezel. Very few instances needing to touch the screen. Another thing which spoiled me was watching the 2015 keynote for the Apple Watch. I was vastly disappointed I didn't have 'glances' along with 'time travel'. That would have been useful given a similar feature, widgets, exist on Galaxy Watches.
Also, Siri cant enable water lock mode, while Bixby can.
Additionally, the health apps matter. I hated the dark stark looking Apple version, and hated all my limited edition awards vanishing a month or so later. What's the point of earning them in the first place? To have them long enough to post a screenshot and that's it?
Samsung's health app is far more pleasing for me IMO. All my achievements, limited or otherwise remain intact.