KDE is the best desktop solution usability-wise, by far. This is true with the basic functionality, this is true with the advanced features.
Does it have bugs and shortcomings? Sure, but it's so much better than, let's say, Windows or Mac, it's just crazy.
A simple example I used just now - block select in Konsole. It was added many years ago, and I've been using it every now and then since that dat.