You fresh and shiny young pups are going to laugh at this old dude, but when I first came to Silicon Valley in the early 90s to work at a networking company, the most common desktop NIC was 10Mbs twisted-pair Ethernet, and 100Mbps was the hot stuff to upgrade to.
Now, 30+ years later, I'm sitting here upgrading my lab to 10Gbs everything, and wondering if it will be fast enough.