Earlier quoted context omitted.
Gnome doesn't let you switch easily (alt-tab is somewhat bad). Gnome doesn't let you see your apps well (huge waste of space for candy graphics). [and the list with Gnome goes on and on]; KDE doesn't let you launch them easily (yay for ignoring super-key). KDE is super unstable. I'm sure there are caveats with Unity as well. Simply, there is still reason to chose one or the other, these systems are not interchangeabl…
Alt-Tab works perfectly fine for me in Gnome Shell (I was initially annoyed by Alt+` to switch windows within a program group but now I find it useful). I find the app overview also clear and very usable. And it's nice that it's JavaScript-based so I can tweak some minor things easily (hot corner on external monitors). For Unity I'm probably simply not in the target group, I don't like it. I left KDE many years ago b…
That's what I was trying to say. I'm sure it works for many, but it doesn't work for everyone. That's why people still "care" (if selecting one or another is caring).