Currently my computer has 4gigs RAM, 5TB hard disk space, 1090T OC'd to 3.9GHz. The future will bring 16gigs of RAM, along with a Bulldozer CPU, two 6990s and 15 monitors.
I could use a SSD because this is still too slow for the full unadulterated power I require in my gaming, scientific calculations and thin client I plan on setting up throughout the house.
A thin client is a single computer that distributes its own data to other computers instead of the other computers having to download and install every application/game, so simply by installing it on the thin client every computer in the house could run the same program/game at the same time with only one installation. Since standard platter hard drives have quite a high latency compared to SSD, this would be a very deserving upgrade for a very deserving project.