I personally find the my cognitive load with Linux is much lower now that I've switched over.

First of all, the Windows 11 UI is awful and ugly. The Windows 10 UI was never that great and only looks good as it ended up sandwiched between 8 and 11. I'd have to go to Windows 7 for something that's decent. Admittedly the polish on a lot of Linux DEs and applications can leave a lot to be desired, but I have a choice between multiple DEs and many of those DEs are highly customizable. I'd have to go back to Windows 7 for something that's better polished and works as good for me as XFCE does.

Then there's being in control of my own computer. I control when it does its updates. My computer respects my settings and preferences and doesn't randomly change or reset them. It doesn't randomly install unwanted software on it's own, or reinstall stuff I explicitly removed. It doesn't place ads in my whisker menu or on my desktop or lock screen. There's no telemetry being sent home to the mothership. With anything past Windows 8 I've never really felt like I'm in complete control and Microsoft can just do whatever the hell they want.

While there are the occasional issues as someone who is familiar with Linux it's typically not too difficult to track it down and fix it. Though there are exceptions of course. At least if I have to edit some files in /etc they tend to stay that way as opposed to having to edit the registry with regedit.exe only to have Windows randomly undo what I did with the next update. And while PulseAudio is notorious for causing all sorts of havoc, it seems like it's finally gotten to the point where it finally works and I haven't had any issues with the volume control for a while now.

As for games it obviously matters what games you like to play, but the amount of tinkering I've had to do to play any game in my Stream library beyond enabling Proton so far is zero. Which has been a very pleasant surprise and honestly I've been pretty impressed with that.