I'm seriously considering switching, but every thread about how 'easy' it is always devolves into a bunch of arcane computer-speak that I'm really not interested in learning at this point. I really just use my PC for web browsing and simracing/gaming these days, and I don't want to need a computer science degree to do that.
I agree. However, I will say, in my experience, if you want to use it exclusively as a gaming PC and exclusively with Steam, and without any sim peripherals, and without some competitive online multiplayer games, it works extremely well, and without any hassle.
Honestly? Get a second device when installin/using linux, you'll need it for browsing when you get stuck. Otherwise its alot of clicking until your brain does as well.
People generally want something closer to cutting edge / bleeding edge for games. Can't be waiting 6 months for graphics drivers that fix an issue in a game you are playing today.
True enough — but for those few who enjoy such things I must point out that debian makes kernel builds very easy to do. When mesa gets too old there will usually be a backport.
All of the major distros run games with comparable performance. Some make setup a little more convenient than others in certain cases, like if you need a bleeding-edge kernel for just-released hardware.
Pick a desktop distro that you like working with. Chances are it can run games just fine even if it needs a few tweaks.