For example: it's hard to get through summer without a fan or air conditioner in your bedroom by me. A surprising number of those come with always on lights and it's not always clear until you plug them in.
Beyond that there's just "not everyone has the luxury of a single purpose room." Especially now, lots of people need to setup their home office in their bedroom. I have a vacuum with an always on indicator light, and the only good place to put it is a bedroom. Some people have studios and their entire apartment is their "bedroom."
All in: you're right, it's best to keep your electronics out of the bedroom, but that's not always practical and way to many things have unnecessary status lights.
Having grown up in a small house and spent quite a lot of time in a friends house which is a lot bigger (I'm still young, so this was very much post video games for example), I think the mental separation of having multiple rooms in a house (rather than everything being done in my bedroom) is probably worth another 5 or 10 percent on exams for me at least. The idea of having a "games room" for example is utterly unthinkable to me still, for example.
For example: it's hard to get through summer without a fan or air conditioner in your bedroom by me. A surprising number of those come with always on lights and it's not always clear until you plug them in.
Beyond that there's just "not everyone has the luxury of a single purpose room." Especially now, lots of people need to setup their home office in their bedroom. I have a vacuum with an always on indicator light, and the only good place to put it is a bedroom. Some people have studios and their entire apartment is their "bedroom."
All in: you're right, it's best to keep your electronics out of the bedroom, but that's not always practical and way to many things have unnecessary status lights.