Let's talk gaming on Linux

Assorted questions. As always, don't feel like you have to treat them like a quiz and answer them one-by-one (though you certainly can), but more like jumping off points for discussing whatever you feel is relevant:

• Who here games on Linux?
• How long have you been doing it?
• What is your setup like? Full-time Linux? Dual booting? GPU Passthrough?
• Which distro do you use, and why? Did gaming-related factors have an influence on that choice at all?
• What are some of the positives about gaming on Linux?
• What are some of the drawbacks/frustrations?
• What are some of your favorite native Linux games?
• What are your thoughts on the main gaming platforms' support or lack thereof for Linux?
• Do you personally feel a friction between open source philosophy and playing closed-source games?
• Do you think that Valve's Proton initiative is a help or hindrance for Linux gaming?

Share anything else you feel is relevant as well. I'm mostly interested in hearing what other people's experiences are.

Also, I debated whether to put this in ~games or ~tech and ultimately decided on the former, but if it's better placed in ~tech I'm fine with that.