Because you don't want all those lovely boutique bows to get snarled up and destroyed by being tossed into a drawer.
Or worse still… having something spilled on them because they were tossed carelessly onto a dresser.
Ok, I admit it. I did this. I had a few, ok a LOT of hair bows scattered about my vanity when some mouthwash got spilt!
Honestly, this was a real mess! No it didn't utterly ruin the hair bows but WAZOO did they smell. And cleaning them...