I've been debating making the switch for a long time, but after spending like a week researching Proton, Lutris etc. on Linux, I decided to try it out and nuked my entire Windows 11 drive. :)
So far, every game I threw at it works perfectly fine, including Elden Ring & Cyberpunk.
I had to spend a little time troubleshooting some small issues but it's part of the fun!
Specs are in the neofetch, my compositor / WM is Wayfire (Wayland) :)
I still have a windows partition out of habit (a Steam partition, really) despite running Linux as my main system for 30 years or so.
However, it's now been ages since I've had to boot windows to run something. It all runs fine in Linux nowadays.
Maybe I'll stop waiting to need it and just add an extra XFS or whatever disk to my system one of those days.
I've deleted my Windows partition because I would have needed to reinstall anyways, my partition table was not to my liking and I just said screw it. I hope I won't regret it! I only have a Win 10 VM at the moment.
If you don't use the Windows drive I'd say, take that space back :)