I used to prefer Gnome for the longest time. It seemed to be lighter on resources and cleaner. I tried KDE again a few years ago and was blown away at how much better it has gotten. KDE has quickly become my go to. The ease of customization, theming, and the wealth of settings sold me on it.

I ought to go back and try Gnome again since it’s been a few years. I’m sure they’ve gotten better too since I last used them.

but it has no Nintendo games

Natively? No, but it is pretty easy to emulate on the Deck. I have successfully run everything from Gameboy to Nintendo DS and Switch games on the Steam Deck.