I have gnome installed and setup as a backup, plus I use its greeter, but I am another who does not really want a full DE and instead using Sway as my WM day to day.

I have two 32"@4k monitors so normal manual floating window management just annoys me, I greatly prefer tiling window management to auto sort my windows for me. Its extremely rare that I need to full screen anything on monitors this large to fit everything I want in width wise so I want multiple apps per monitor.

If all of this is managed dynamically for me, and I am not manually sizing or overlapping stuff, all the better. Couple that with easy use of multiple workspaces for different tasks (I typically use three per monitor), rarely do I have a need to manually resize anything. I have it setup to open my common apps on the right workspace for me, and each workspace set to the right layout for that set of apps, so much less faffing.

My (40%) keyboard(s) run QMK and are setup to enable most of my common combos, such as switching workspace, moving apps around are never more than two keys. The more I can do without moving my hands from the keyboard, the better for me.

Final thing is that Sway is wayland and for me extremely stable.