Apple: Our Apple Watch sleep tracking system is so sophisticated, you'll never want to go to bed without it.
Also Apple: Go to bed without it or we'll never update your WatchOS software again.
@Newmy Also Apple. Hey, your watch can charge to 80% so you don't wreck the battery. Clever huh?
What's that? You want to enable that feature? No, sorry you can't do that, it might just turn on randomly at some point if you're lucky. And never turn on at all if you keep an old watch entirely for sleep tracking. Sorry not sorry.