I run Windows on all my computers but was pleasantly surprised by the desktop mode on SteamOS. The incredible number of options on a simple config dialog such as changing the keyboard layout was incredibly impressive (which isn’t SteamOS specific but rather a Gnome thing?).

SteamOS uses KDE! GNOME has very little configuration available (sorry, I am a KDE fan).

It is incredible in desktop mode, in modern times it can literally provide all the computing a normal user needs, which is kinda ironic.

SteamOS uses KDE Plasma for the desktop mode, not Gnome.