Well, the best charging habits are formed when letting the watch charge at night and it learns better. Also, I dislike to have 5+ hours lost of Stand notifications.I guess it depends on the person. I think if you fall asleep fast and do not wake up until you hear the alarm, wearing regular watch does not make sense at all. And I guess you would also not be super interested in tracking your sleep as no issues.
I have always worn watch to bed. Like since 3rd grade when I got my first watch. I have had sleep issues since young age - do not fall asleep around the same time, wake up during the night, wake up earlier than my alarm. In these cases having the watch is useful for me. If I wake up 20-30 minutes earlier than my alarm I would get up. If I wake up 3:00 AM I would try to fall asleep. Naturally because of this I am also interested in tracking my sleep.
To each their own though. My parents cannot wear a watch to bed. I have friends who are like that as well.