Wait! I know the answer to this one ...
So mostly of course it is bragging rights. But let's look a the reverse, if you're any type of IT professional or guru then living in a house with a pathetic DSL connection (say 5 Mb/s) is a mark of shame.
For my part coming back to the UK with its SLLOOOOOOOW Internet except in a few City areas (yep most of London can say screw you) means that I had personally to choose something a lot slower than 1 Gb/sec internet.
I can say that when (not in the UK) I used to cloud my entire large home setup I got upto 40MB/sec upload to my cloud providers. Every day just opening a few VM's caused a daily upload of about 0.5TB.
Combine that infamous home web server was pushing over 500Mb/s constantly, and yes the 1Gb/sec symmetric connection I used to rely on came in very handy.
Back in the UK you just can't get this sort of things unless you have somebody like Hyperoptic in London. Yep, I'm jealous.