Updated: Aug 22, 2019
A quick google search brings up a great deal of statistics on why your listing should be staged. According to mortgagereports.com homes that are staged sell 73% faster than homes that are not.
The National Association of Realtors group releases a study annually that breaks down staging, from the buyer's agent and seller's agent perspectives. A whopping "83% of buyer's agents said that home staging made it easier for a buyer to visualize the property as their future home." You can read more of these statistics (and see some fun graphs) here: https://www.nar.realtor/sites/default/files/documents/2019-profile-of-home-staging-03-14-2019.pdf