It's less about looks (at least for me), but about speed

Pretty much all I need, I literally have at my fingertips.
Opening a terminal just feels much more quick - don't know why it really is faster, but e.g. i3 is just a much smaller code base than KDE and they're not really in competition, as they focus on different things.

Re-arranging windows in different layouts with just keys is also nice - and fast as fuck.

I don't want to move windows around when I work, I want to focus on my work.
Just needing to move the mouse to position a window somewhere can sometimes break the flow.

But I have to admit, that with some layouts (split screen with one side tabs and vertical terminals on the other side, can be a bit frustrating, when I jump through the tabs and not into the terminal container.

But I think, I'll need to check the i3wm manual again, because jumping between containers is probably possible, without jumping through all tabbed windows.
So, I guess, that's on me and not a wm fault

All in all, it depends on the kind of work you do on your PC.
I'm often in terminals checking logs and stuff.
I3 just felt the nicest (on X11 - couldn't try sway or hyprland, because I need XForwarding and I'm not sure, if that works by now or ever will) and I stayed with it - for now

If you are tiling-curious just give it a try and you can see the difference for yourself.

It's never about being the optimal solution for everyone.
It's about being the best solution for specific workflows and so it depends on yours.