To answer your question a bit more application specific, StaticWire can be used to host your own services. That means you can host a website with StaticWire over a cellular internet connection for example. Or, you can use it to allow inbound connections from other lightning nodes to your lightning node. Or, you can use it to connect to your lightning node with Zeus remotely and not deal with all the issues of trying to use TOR to do that. Or, maybe you want to use it with your home automation or security system and eliminate application specific proxies that can back door into your house. Maybe you want to host your own Jitsi server.