Agreed, wifi is nice when I want to toss micro systems in remote locations without ethernet. Or even on a battery setup with a camera. Lots of use different uses, for me the future is moving towards wireless, even wireless storage.
For me, it's wired with any technology that gives power and network over the same wire so that I can forget the thing when setup (no wireless issue and connection problem) and it doesn't stop working because your router is down.