Do you wear a watch?
It just depends on the occasion
If you wear a watch, do you take it off at night?
Yes. That's the correct thing to do after all.
No. What purpose would that serve? I want to know what time it is if I wake up and don't want to have to hunt around for my watch.
I don't wear a watch so this question is completely and totally irrelavent to me.
Other, please specify in comments.