They're absolutely important. They're things I deal with multiple times a day every day. My work laptop is a Mac. My work workstation is a Linux (Gnome) machi

They're absolutely important. They're things I deal with multiple times a day every day. My work laptop is a Mac. My work workstation is a Linux (Gnome) machine. My personal workstation is a Windows 10 machine (not upgrading until they bring back side taskbar). I own and regularly use a Chromebook. I am familiar with all the major desktop environments and OS X is my least favorite.