Linux

Kde because i want customization and standard is also ok. I tried gnome but did not like that extensions were required for tray icons etc. Gnome is otherwise good.

I3 and hyperland i dont get. Some windows should not be very large no matter how much free screen space you have. Example is calculator or old school chat applications like pidgin. No native standard set of applications. Everything must manually be added and custom, like everything in kde settings(sound output, network settings, screen size etc). Waiting for when applications can recommend its screen size to the window manager.

KDE Plasma 5.

It's default on Slackware =P

KDE on my main laptop, Cinnamon on the TV-connected mini-PC in my living room. I like the customization options of KDE, and with Cinnamon I just wanted to test out Linux Mint, no big reason other than that. I used GNOME for some time with Pop_OS!, and it was not fully my thing. I plan to test out more DEs when I can free up an older laptop to do some more experimentation - for my main laptop I require stability, so I don't mess around with it too much.

KDE Plasma because it's the one I like. If it disappeared tomorrow, I'd use Xfce.

I have an i3 and a hyprland installation.

I like tiling wms but Wayland still has some annoying issues so I like having the more stable i3 installation on my main computer.

none. you dont need a DE, you can just run a tiling wm and some terminals...

Plasma, because I want things to Just Work(TM) and the customizability and modernity are neat. I like right click --> pin to top/bottom as well.

Currently I am on KDE, but I am an xfce lover. I can't wait for the next xfce update and for Cosmic.

I am living KDE almost default. I have the impression that with too much customisation problems come.

Xfce is rock solid and rock solid after customisation too. It is truly amazing.

Gnome needs far too many extension for me to be usable. And so I avoid it.

Cinnamon is great too, but it's in the middle. If I don't want to use Wayland, at that point there is xfce.

At the moment, my main machine is on KDE because it has very good Wayland support and isn't Gnome. I prefer Cinnamon

KDE Plasma because I can make it look, feel and work mostly like Windows. I have to use Windows at work and don't want to have to think too hard about differences between computers I use at work vs. at home.

Qtile, just because it's Python-based.

I settled on Cinnamon after jumping around a bit. I do still like Gnome though even if both are fairly bulky DEs.