SteamOS is not designed for general computing, so if you use your machine for anything outside of gaming, a desktop distro would be a better fit. (If I were to do this as a first step away from Windows, I would probably choose Linux Mint and switch to the KDE Plasma desktop environment after installing the OS.)

You could then install Steam and get all the gaming goodness without giving up productivity apps. Maybe use Steam's Big Picture Mode if you really want a console-like interface.