Yes, mostly useless. Though from my perspective, as a young male that has played video games quite a bit, it has made me curious about certain useful skills. At some point, you'll start playing with the game, modding it, or hosting servers for your buddies, or making cheats. I've learned scripting with Lua because I wanted more. Sure, you won't become a linux admin by hosting a Teamspeak and WoW server, but it will get you closer.