I've also made the switch from win10. There are a lot of "small" things that add up. The constant nag messages. Updates. Start menu ads. That was mist of it on Win10. I've had some experience in win11 at work, and I can say the new UI is abysmal (honestly I couldn't care less about the UI as far as look/textures go, but one thing I can't stand is slow animations for every little thing. If I open the start menu, I want it open as soon as I press the keyboard button, not 0.5s later. When I snap a window, I don't need 0.5s of my life wasted on watching the "beautiful" animation. I just want it on half the screen instantly. Whenewer I close a window, I don't want to have it fade out and distract me, I want it either gone or a popup asking me wether to save, discard or cancel show as soon as I tried to close the window. I want the Control panel back. I knew how to use it, and navigating menus wasn't animated to consume 0.5s for every screen change. The animations were what pushed me away the most. I assume you can turn the off, but I never bothered since I changed computers often and would just rather put up with it rather than spend time tweaking each and every computer I wanted to use. The UI is why I don't like win11, and the MS requirement is why I won't let it touch my computer.

I have to say, switching to Linux was very frustrating as I had to google every little thing and most sites are filled with ad garbage even with uBlock on Firefox turned in with most of the lists, so that was frustrating. But now, after just under 2 years of Linux use, I can say the switch has paid great dividends. I can do a lot of menial tasks much faster (highlights are fike conversion with ffmpeg, combining PDFs with pdfunite, navigating folders using cd and tab completion (I'm the type to have a lot of folders in one parent directory to whkch I know the names, so typing the name is faster than looking for it manuakly and clicking on it), not to mention all the programs I used that are on Linux open 3-5 times faster.

Another big quality of life improvement are updates - updating apt packages with one command and Flatpaks with another, not having to reboot while doing it and not having programs prompt for updates individually is all something I never knew was possible before switching over. Linux has really impressed me with how well it works and how much of a laid back attitude it resembles, as opposed to the whiny Windows forcing its will upon you with its updates, ads and bloat.