Re: It's bad to say....
"But I like going round the house and knowing router is 10.0.0.1. Main PC is 10.0.0.2. 2nd PC is 10.0.0.3 and so on. Can't very well do that with IPv6 can I."
You can: https://www.edge-cloud.net/2013/08/07/ipv6-link-local-addresses-as-default-gateway/amp/.
As a bonus, fe80::1 is only 7 characters.