For me... It's cost effective, less messy, looks nicer, they don't eat it, and is easier to clean. I love that I can simply vacuum out the poops between changings, and twice a week the liners simply go into the wash and a new one goes in. Quick and easy. I love that there are no shavings all over the floor, especially since the girls are in my living room where my dogs also are and can eat whatever flies out of the cage. I don't have to run to the petstore for bedding all the time because my liners are washable and reusable over and over again.