Well, if you want encouragement. I did it.
Emprie:TW, X3:AP, Stellaris, Factorio, Arma3, Cities Skylines all work just fine on Ubuntu 14.04 LTS - the only thing a little sketchy is installing steam and steam overlay I turned off. 1080Ti works just fine here too.
And I can choose what and how to update. There's proprietary drivers for GPUs just the same... as if open source drivers matter for most gamers... you're buying proprietary hardware...
The thing I note that doesn't is Company of Heros which I occasionally play with family.
I rarely use Windows personally anymore and happier for it. Only a matter of time till I wipe that SSD and one day discover the usb stick for windows and wonder if I could wipe that too...
Seriously we put up with vista, took a deep breath with windows7, windows 8 got us angry all over and 10 is a goddam nightmare.
It's an operating system for christ's sake. I decided near the end of last year, that's it. I'm out.