I actually think one of the driving forces that will bring 10GbE to office/home is the broder adoption of SSDs and faster NAS/RAIDs.
Certainly even the amateur photographer would like to have better than 100+MB/s to their NAS, which then makes NAS a more clear win. It's better than direct attach storage in every respect except performance over GigE. (Not that it's all that slow, it's about that of FW800 if you use async NFS, but it does suffer a lot more if you use AFP or SMB.)
Many professional photographers bulk up on DAS, and not just for fast local scratch/working files, but to store entire libraries - rightly because NAS is too slow for this. They see it as either/or. Rather than getting small but fast local storage for work files, and push/pulling their completed files up to a NAS. It's not that slow, but slow enough they'll risk their whole library to local storage (and file system corruption as a result of a crash or power failure).
HD video people cannot use fast local storage if they're in a collaborative environment. The files are so huge even over 10GigE it doesn't make sense. So they use 10GigE and live edit over the network to avoid push/pulling huge files around entirely.
So there is very clearly a workflow need for 10GigE for amateur and pro photographers, but even there it's not such a need that they are willing to buy 10GigE. Overwhelmingly they do not buy. It's still the domain of HD video (and enterprise for busy servers).
But the idea of home users pushing huge files around? I remain 99% unconvinced. Even wireless can stream the files they use, which are not big, and are highly compressed.