Serious question: what do you want that much bandwidth for? I could upgrade from 100Mb/s to 1Gb/s but I haven’t because honestly can’t think of a use case for myself.
95% of consumers won't notice, but if I'm in the middle of uploading a docker image and my upstream bandwidth drops from 30 megabits to 3 megabits due to increased packet loss and TCP re-transmissions, I definitely will. I've had this happen before. Massive packet loss in the neighborhood. It took months to get it fixed.
Nowadays, with my UltraHD Blu-ray rips on the Plex server, it's not unreasonable at all to require more than a 2 Gbps connection to reliably stream those. I'm often away from home, so it's nice to just be able to log into my own personal server to watch stuff at it's native and highest available quality.