One of my reasons for using the P.O. Box in past years (in addition to the security issue you mentioned Archie) was reliability of the mail delivery. The delivery to my old residence was extremely unreliable in addition to being made to a far less than secure location. My current mailing address has proven to be extremely reliable and very secure, not only due to the location but the fact that the box it goes into is locked , so I only use the P.O. Box now and then.

Jim