[kgermino]

Easier said than done unfortunately.

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.

[Cerium]

I just black tape everything in my bedroom. I don't need to see a light to know the fan is on.