It probably powers a nearby wall outlet. It’s more convenient to plug in a lamp, turn it on and leave it on, then use the wall switch to turn it off and on. This is particularly helpful if the lamp is not near the hall or door into the room.
It could also be for a hidden outlet in the ceiling that was installed for a future ceiling fan.
Sherlock5 12 months ago
It probably powers a nearby wall outlet. It’s more convenient to plug in a lamp, turn it on and leave it on, then use the wall switch to turn it off and on. This is particularly helpful if the lamp is not near the hall or door into the room.
It could also be for a hidden outlet in the ceiling that was installed for a future ceiling fan.