Link to Linux Help Guy's Video
TL;DR: Source2+VulcanAPI+Insurgence of SteamOS IS going to bring a level of gaming on Linux we've never seen before. It's not there yet but is coming sooner than you think. Pretty much everything else on Linux works as good or better than Windows.
I realize you're not doing any new stuff on this channel and that you were (obviously) pretty disgruntled over your recent Linux ventures however, a video like this makes it sound as if everyone whom tries Linux will get nothing but frustration from start to finish. Perhaps that's true but it's all matter of perspective. I've always felt when one gets to a level of frustration with something the proper course of action is to take a step back, ponder over what may have went wrong, casually research, and if you feel like it pick back up again when the time is right. If you keep a Windows install handy and available it's as simple as rebooting and selecting a different option when presented.
I'm an IT professional of over 10 years specializing in remote support. Every tool I use is software or web based software. Two weeks ago I decided, after a 4 - 5 year hiatus from Linux, that I'd give it another go. I bought myself a second SSD so as to retain my Windows installation in case anything went drastically wrong, slapped into my system, downloaded/installed Ubuntu 14.04, and within a couple hours I had ALL my work tools configured and functioning properly. Then, I decided I'd try my hand at some of the customization to the DE. It took a little elbow grease yes but, what I learned is how much more you can do in terms of user interaction with the OS on Linux vs Windows. I could emulate a Windows DE, OSX, or do whatever the hell I wanted. So, another few hours and another win for Linux. Everything was going so smoothly so I said fuck it, I'm going to try to get some games on my rig too. Bear in mind I have pretty new hardware (all released in the last few years but other than my GTX980 nothing I have is considered "bleeding edge" hardware). While, at this point in time, there may be little choice for gaming on Linux I had ZERO issues with all my Linux compatible Steam titles or Minecraft. The only thing I'm really having to work on is game capture and honestly that's more of a pet project as I don't normally stream or record my games anyway but, I wanted to see what the experience was like.
Perhaps Ubuntu has comes such a long way since I last used it that it's just that much better or, perhaps my own inner development as an IT pro and human being have ushered in new understandings. Either way, I've been using Ubuntu as my primary work rig OS for over two weeks now and you know, I'm not sure if I'll ever go back to Windows unless it's to play a non-Linux compatible game. I'm sorry this is just a long comment but I wanted to let others out there know that using Linux can be a challenge but how you accept the challenge is what determines whether you'll be successful. The same is true about all things in life. You can be a part of the problem or you can be a part of the solution. With Linux, you can be both and through doing so provide yourself with actual real-world value in the IT industry.
A word of caution though for those looking to try it out; Games, particularly uber-pub AAA games, are a ways from being mainstream on Linux so don't overwrite your Windows install thinking you'll be able to play all your favorite titles on Linux... yet. I will reiterate though, Valve and SteamOS are going to provide a new conduit for Linux gamers which is extremely exciting. As far as everything else goes, Linux works just as good or better than Windows if you're willing to think critically and learn new things. If you're looking for a change from MS/Windows, Ubuntu is a fabulous place to start but, there is no "easy button" so to speak. Put on your binary ass kicking boots and make your machine do what you want it to do. Part of the fun in using Linux is to see how far you can push it and yourself.