Linux

KDE, it's the swiss army knife of DEs.

KDE, always

Used it since I switched to the Linux Desktop 25 years ago. Quickly tried gnome, and others, and hated it.

KDE is fast, efficient, looks awesome, is ready to work with, and highly customizable

KDE plasma. Coming from 30 years of running exclusively windows it's just the most comfortable and easy for me to use (way more than Gnome). Easily configurable, works. Can't ask for more.

KDE plasma, unless it's on a tablet, then Gnome

Probably KDE, it's the most 'complete' feeling to me with settings and GUI for most things.

KDE Plasma for ease of use if using Nvidia Otherwise Hyprland or exwm

MATE has been on most of my machines, except the BSD ones.

But past year or so, I have grown a fondness towards ctwm, and gradually migrated my machines to it, Linux and BSD alike.

It is not a DE, but the fact that I have to assemble my suite of software myself on my machines, makes the point of using DEs moot.

Cinnamon for 2 reasons

1. KDE is missing a lot of features which still only works in Gnome. Like the taskbar Calendar app syncing events with services like Google Calendar

2. cinnamon is extremely stable and doesn’t move your icons around when you connect to an external display with your laptop and the display has a different resolution.

KDE. Been upgrading the same environment for 5 years just keeps getting better.

I started around maybe KDE 3?

That's not too hard a question for me, I've been using the same DE for years: KDE

KDE the customization is off the charts

This isn't even hard. KDE without a second thought.

I regularly try other desktops, and I regularly come back to the only desktop with any sort of reasonable thought put into it.

KDE for sure. The modern versions look exactly like how I want a desktop environment to look out of the box, and they keep the full range of customizability that a desktop should, IMO, allow it's users to have. Which is something Windows just kept slowly getting rid of over the years.

I also prefer to have a taskbar that is ever present with a traditional start menu that's cleanly organized by category rather than the current full screen pop up "activities" search thing gnome does nowadays.

i3
best tiling on X

XFCE would be my choice too

Definitely Gnome here. Though I have a long list of notes, it mostly just works exactly like I expect with little friction or guessing. I donate $100/year to both Gnome and KDE since they are both good pieces of software, and I love that I get to chose mine. Further, I think KDE is the logical choice for something like the SteamDeck where it's going to have a lot of gamers that expect computers to work like Windows. (even if I don't like it, >_<)

Switched from i3 to sway to hyland. I like the virtual desktop setup and noiseless facing interaction.

KDE for the desktop and xfce for the laptop

KDE

I keep coming back to KDE time and time again. It's so easy to mess with, I can set it up exactly how I like it without much effort, and it always looks good because someone else did all the work making themes and widgets I use.

That said, I love XFCE, I'm just trash with CSS so it takes me forever to get it how I like, and on my Surface I can't get the scaling to work so everything is beyond tiny.

Always wanted to like gnome but never could, and xfce is fine but I much prefer KDE, it is verry likely that I'll actually keep it till my pc breaks.

I'm a long time supporter of Xfce, but I have to say Cinnamon these days. It's light on resources while being feature rich. Also it's the default on Mint and it just works.

Gnome.

GNOME because it works out of the box like GNOME

Cinnamon by and far.

I've used so many distros and DEs I don't even know where to begin, but Cinnamon got me hooked for the long run. It's legitimately the most polished and "ready to run" DE I've ever used, yet still allowing for far more customization than Windows ever offered.