For those who play CS:GO and Dota 2 competitively, Linux isn't a viable option because CEVO and ESEA don't have clients for Linux. That's ignoring all of the bugs and quirky behavior that come with the platform. ALSA has a 10-100ms delay and for a game like CS:GO that relies so heavily on audio feedback, that's inexcusable. There are also issues with mouse input, lag, and random frame drops on Linux that have lingered for years.

You'll see all kinds of posts showing Min/Max FPS and how Linux beats Windows at this game or that but you rarely see any mention of Average FPS because they're usually pretty awful.