The Benefits of Siblings Sharing a Bedroom If your kids share a bedroom, you've probably faced your share of challenges — over toys, personal space, bedtime . . . but what about the benefits? Whether your little ones are bunking up by choice or because of your home's size constraints, it turns out that there are some perks to sharing a bedroom with a sibling. Check out these five happy discoveries that one mom made when she put her two kids into one room.