> Copper 10gig is power hungry and demands good cabling.
Power hungry yes, good cabling maybe?
I run 10G-Base-T on two Cat5e runs in my house that were installed circa 2001. I wasn't sure it would work, but it works fine. The spec is for 100 meter cable in dense conduit. Most home environments with twisted pair in the wall don't have runs that long or very dense cabling runs, so 10g can often work. Cat3 runs probably not worth trying at 10G, but I've run 1G over a small section of cat3 because that's what was underground already.
I don't do much that really needs 10G, but I do have a 1G symmetric connection and I can put my NAT on a single 10G physical connection and also put my backup NAT router in a different location with only one cable run there... thr NAT routers also do NAS and backup duty, so I can have a little bit of physical separation between them plus I can reboot one at a time without losing NAT.
Economical consumer oriented 10g is coming soon, lots of announcements recently and reasonableish products on aliexpress. All of my current 10G NICs are used enterprise stuff, and the switches are used high end (fairly loud) SMB. I'm looking forward to getting a few more ports in the not too distant future.