Yup.. gigabit is USELESS in the home unless you have a home server.
"A" home server? Who would have just one?
Local DNS, DHCP and DCHPv6 servers need failover, and onsite online backups are done cross-server.
So I'd think any nerd would have at least two.
I also have two different wired networks - one that is used for clients to talk to the servers and the gateway, and one that's used for servers to talk between themselves. There's no reason for traffic between a client and a server or internet to get slowed down just because one server backs itself up to another.
And two different Wireless N networks - one 2.4 and one 5 GHz. That way, using one band won't slow down the other.