Pros:

• I never have to worry that my OS is working for someone else by design.
• Never surprised by ads.
• Never surprised by updates that move/remove something in the UI.
• Never have to be worried about some new feature that windows is forcing everyone to use that accesses all my data and might go rogue and delete it all or upload it somewhere.
• BTRFS feels decades ahead of NTFS
• package manager makes it easy to try new programs
• I can try multiple desktop environments
• I can write scripts to customize my experience

Cons:

• Occasionally there is a program that only officially supports windows and I have to figure out how to get it working in proton or a VM. This happens much less now than 10y ago.
• A game might say it works on Linux, but I hit some issue that my friends on windows aren’t hitting, and have to determine if I’m just unlucky or if it’s something to do with proton/Linux.
• there are still some remaining kinks being ironed out with the x11 to Wayland migration.
• sometimes there’s a bug in a package and I have to downgrade it. But that’s not really even an option in windows.

All in all, there is nothing from windows I would say I “miss”. And it feels refreshing to know I’m out of the line of fire of msft.