Why would you take the extra time do design the interior decoration is you just hack together a lightbulb completely off center?
Wanted to save up some space and bought furniture with doors all the way to the ceiling? Hope you bought a spare light as well.
Some people like things as efficient as possible. So why not hang a couple of branches on the ceiling with some duct tape and put some lights on? No space wasted, time to setup only 15 minutes.
Did they realize there wasn't another floor before constructing the stairs?
Some people are just not meant do do an engineer's job.
Another architectural fail. Or maybe a secret passage disguised as a ceiling.
Some smartass will eventually take a photo of the next guy's reflexion.