I had a similar experience with macOS a few years ago. After using GNOME for over 15 years, I had to switch to a Mac for work for about two years; and I never fully adapted. Windows, on the other hand, I've never been able to take seriously; every time I use it, the interface feels completely different.

The same goes for tools like Word, Excel, and PowerPoint. I prefer Markdown for creating presentations and documents, and I even use Vim keybindings in VSCode and JetBrains IDEs (because I am lazy and you can use them nearly everywhere). My "TV/Steam" runs a tiling window manager (Sway) and is controlled by a keyboard instead of a remote (and you guest it, you can use Vim keybindings with sway). At one point, I used the right-hand for mouse at work and the left-hand at home. And, of course, there is the classic switch from a native-language keyboard to an English one for programming. What I'm trying to say is, you can adapt if you're motivated. And sometimes you don't.

I'm also a huge friend of trackpoints instead of touchpads. And I avoid to use the mouse and keyboard at the same time. Usually, mouse while planning, reviewing and presenting and keyboard when creating. And I learn keybindings for software that I use daily because of that.

Less GUI, means more Content / Information on the screen. And sometimes you benefit from that.

My takeaway? Do whatever makes you happy. Rewiring your brain from time to time keeps it flexible and sharp; like learning a new language or playing a musical instrument. It's a workout for your mind.

And Productivity isn't just about speed; it's also about quality. Sometimes, slowing down (by using a mouse) to focus on the craft of your work leads to better results than rushing to get things done as quickly as possible.