There can be many advantages to running a personal relay. It’s not necessary to run a node on it either. I use one that basically connects all my personal devices and pcs via a VPN so I can access my entire music collection , or access my original snap shots from camera from any of my devices .there are a ton of apps you can run on your relay as well, search engines , torrent download clients ,, it’s basically my cloud I guess , it backs my npud events up as well.