For a long time I had Linux in Dual boot, cursing at how unfortunate it was that I couldn't really play games there. Even games that had Linux builds often had those as afterthoughts, with bugs not present in the main windows version.

Now I can just play the Windows version through Proton. I hope that if Linux gains traction Proton becomes unnecessary, but I'm happy that Proton came as far as it is. Honestly, to play old Windows games it is probably better than Windows.

A few games required some minor tinkering to work, but have been pretty smooth here. If you enjoy playing the latest AAA (that probably takes a while until it gets supported), I would say that you'd better stay on Windows. Otherwise, Linux is more than a viable alternative right now.