Here's a good reason NOT TO!
Researchers say when you make your bed, it makes a more safer environment for the dust mites living inside your bed. An unmade bed's warm, dry conditions are harder for the dust mites to handle.
Leaving your bed unmade cuts down on the amount of moisture in your bed, so the mites dehydrate and die. This is good because dust mites leave allergens in your bed that trigger asthma and other allergies. I say YUK!!!-mj
Read more at http://tiny.cc/emtovw