What desktop enviroment do you use and why?

Was a Gnome user until Gnome 3.

Since Plasma 5, I use KDE Plasma.

I'm just going to share my unvarnished opinions here, I clearly understand that Gnome users feel differently, and that's okay.

• Gnome 3 performance was objectively worse on every bit of hardware I tried than Plasma. (Unfortunately I had functional gripes with Plasma 4 so couldn't use it.)
• The years of faffing about I had trying to be happy with Gnome 3 and trying to use other alternatives until Plasma 5 was ready pretty much convinced me of this:
  • Gnome devs care more about achieving their vision of how a desktop should be used than they do about accommodating users who might feel differently. This is my perception, and it's a deeply held opinion. No matter how strongly you feel I'm wrong, you aren't going to change my mind. You can come at me if you want, but it's going to bear no fruit.
  • KDE devs have a vision, but place nearly equal importance on ensuring their users can make different choices if they choose. If this isn't true, they do a damn good job of pretending it is, and that's good enough for me. 🙂
• I'm unhappy with the degree to which it appears the Gnome team has actively worked against the ability for users to easily customize, and with various feature removals that at this point are so far in my past that I probably don't remember the specific things that pissed me off, but I remember their explanations for feature removals being salt in an open wound every last time I cared enough to investigate their stated reasons.

Plasma 6 does everything I want the way I want. I have loaded it (and Plasma 5) on very low end and very high end hardware and found it performant and functional on both, consistently.

You'll note I don't claim it to be the best. There are folks out there for whom the Gnome vision happens to be how they like to work, or who aren't bothered by whatever hoops you have to jump through currently to customize a Gnome environment, and I'm sincerely happy for those people. For them, Gnome is the best.

There are lots of other DEs and of course tiling WMs exist, but it takes me no time at all to have a fresh plasma install working the way I want my computer to work and looking the way I want it to look, and thus I literally have zero complaints. So for the past few years I haven't even looked at any alternatives. If there's ever a time that I don't find the desktop product itself, and the KDE development team's approach to desktop development, to be absolutely perfect fits for me, I'll look elsewhere - but honestly probably not at Gnome.