TL;DR Author threw away watch because they keep forgetting to charge it and managing charging cable was difficult. There must be reasonably easy solutions to both of these problems.
I have a wireless charger next to my bed, I go into the shower, put it on there, come back and it's good for another day or so.
The sleep data would be the only thing really valuable to me, so taking it off at night would defeat the purpose, and travel too often to keep any sort of permanent setup.
I don’t know that there is a good solution.