Because, if you are like me, you will discover two giant ink blotches from an errant, uncapped pen on your favorite, $150, CREAM-colored Anthropologie duvet.
You will alternately curse at your carelessness and pray for the stains to come out.
You will spend 10 minutes running the stain under a torrent (of now blue) water.
You will admit defeat.
You will look for a dry-cleaner / miracle-worker in the morning to salvage your beloved duvet.