"i've always wondered if i could keep windows 10 after support ends..."

https://midwest.social/post/34720277

my biggest concern is getting vr to work on Linux reliably. if not for that I’d have switched long ago.
What Headset are you using? I use ALVR and find it as reliable as Windows was.
I’m using Valve Index, slime vr trackers and a giggletech puck. I guess it’s possible to get all of that to run on Linux but it’s probably going to be a pain to set up.
Valve product in general have great Linux support so if you use Steam VR it should be pretty straight forward. Just make sure you use a Desktop environment that supports VR (pretty much everything except Gnome).