Comfort is a core factor as far as a good sleep is concerned. Pillows are good and important when it comes to adding comfort and luxury to your sleep. Trust me a bare mattress/bed i.e. without a pillow will not be as comfortable and luxurious as the one with pillows. Pillows do not only add comfort to your sleep but also maintains a good and healthy spine and neck condition while asleep. There are different categories of Pillows based on their respective uses.