I am doing the same, once the OS gets released and I can buy controllers I will be hooking it up as the main system. The thing steam gets right is that everyone in the house who uses games has a great experience, from 10 - 35 years old it is extremely friendly and useful.

I have been using Steam on Linux and once they get a few more titles final (like CS: GO, they already have DOTA) it removes any need for Windows (home life isn't very Office centric).