Everyone's mocking you for using more than 1 Gbps of internet bandwidth, but I honestly want to know how you are able to saturate it. I've found on even the fastest internet connections, it's difficult to get more than a few hundred Mbps, from any given sever. Do you have a bunch of people on the network downloading large files simultaneously, or are you connected to servers able to saturate your connection? I have trouble getting my computers to copy data between each other anywhere near the theoretical limit for a 1 Gbps NIC, despite being connected through only a single switch.

Steam CDN can saturate 1 GBit/S line just fine - and its actually super convenient when a bunch of friends wants to play some 50 GB game you don't have installed at the moment - it will download and install in a few minutes.