I have been running Ethernet cable through my house for 20 years. I even have cable running to my shed office which is about 15m away from the house. I recently unhooked the shed cable as WiFi has got so good. I have an external WiFi I point now mounted at the back of my house. My pet project over Christmas was setting up a Windows VM on my Ubuntu Server in the attic. I teach in different locations and now have my own remote desktop. Rather than go VPN to access my VM I created a cron job on my Ubuntu Server to check my Dropbox account every five minutes for a text file. If the file exists it adds the ip address I put in the file, updates the server's firewall to allow the ip, and then deletes the file. Simple but effective.