I really liked The Windows 7 theme and kept it on on every computer that wasn't a gaming PC, because I'm gaming computers. I want to squeez every last frame. But my dad always turned off the theme on all of his computers because it reminded him of Windows 98, and frankly, I am very sad that you cannot just get the old windows 98 theme in Windows today as a default feature. I know they're a third party apps that do that, but I wish it was still just a feature that they had because it really wouldn't add that much development time. I kind of am just over it with all of the extra bullshit in Windows, like I want an operating system with a file browser and a built-in web browser that I probably will never use, I don't want telemetry, I don't want recommended files, I don't want widgets, I don't want a news center on the side of my computer, I don't want any baked in AI bullshit.
I wish I could literally just get Windows 7 with all of the security and performance and compatibility improvements of Windows 11. Also a functioning search bar, which would be really nice.