What are you doing that 1Gbps isn't fast enough?
One of the most bandwidth intensive things you could do is stream 4k which is usually around 25-30Mbps per device. You could stream 4k on 30 devices with bandwidth to spare.
In terms of up/downloading, it would take you 13 minutes to download a 100GB file at 1Gbps vs 1 minute with 10Gbps. That doesn't seem like much of a big deal to me.
In the future, we may require 10Gbps (difference between a few minutes vs couple hours for a 1TB file) but for a typical home user today it seems 1Gbps is WAY more than enough.
In the day and age of everything being online (cloud, SaaS, etc), what am I missing here? How are so many of you running out of bandwidth with 1Gbps connections?