[ShakataGaNai]

What will you need that much bandwidth for... in the future.

Today? You don't need 25gig. Even if you're in a house with all the latest technology and a half dozen users, you probably won't ever saturate that line unless everyone REALLY tried.

But tomorrow is a different story. Ethernet above 1gig is becoming more common in the consumer world. Not super popular, but its starting to take shape. Wifi 6E has a theoretical maximum of just shy of 10gig. Wifi 7 (not ratified) is looking to be around 40gig.

With work from home and, in general, the world going more digital - there is a lot more pushing around of files. Do you have an iPhone or Android? Everytime your phone is on the wifi its backing up your photos/videos (and other stuff). That alone can slow down most peoples internet connections. Does your computer do backups?

Also once your internet starts to hit about the 1gig mark, you can treat remote servers like we treat LAN today. Want to have a server but don't want to have it at home? That's ok when you've got 1+ gig internet. Of course, it'd be even nicer if that was even faster... in theory.