I love Gnome. But I have a pretty simple workflow where I don't use many applications. Generally I have a browser and terminal open and that's it.
I do all my window management inside of Tmux, which is effectively my actual window manager.
I've tried KDE in the past but I've never liked how it feels like a stepping stone for the Windows interface -- not a huge fan of pullout menus. I've been using Linux exclusively for almost twenty years so I don't have any love for that UX.
I used to use a lot of simple/tiling window managers when I was younger and more patient, Gnome feels similar to those in how it has very few bells and whistles to get in your way.
If only maintaining extensions was easier, it feels like every major release breaks every extension for something stupid like renaming a constant. The Gnome team seems to put very little consideration into making the JS extension API stable.
I'm not sure if I have bad luck but every time I've tried Ubuntu I've had stability issues. Constant crashes and things I've never run into in other distros.
It makes it hard for me to recommend it to new users.