system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How did bed bugs survive before modern beds?
gpt
You must understand "bed bug" is just a common term not the scientific. Bed Bugs are a louse that feast on people while they sleep. Humans have used bedding for generations, things as simple a stack of hay. The bugs simply find places to hide, and come out at night to drink your blood while you sleep.

Extending on that further when you have bed bugs they aren't just in your bed. They get in your clothes, in the carpet, in the furniture. They find any place they can to hide. Your entire home needs to be sprayed and it takes several treatments. They are invasive and elusive. 

tldr bed bugs is just a "cute" name, they infest other places and hide in other places than just beds.