Keyboard centricity is a bonus to me. I don’t like having visible UI elements that don’t do anything for me (docks, task bars). I also dislike the trend of programs not closing when I close them (system trays).
In addition to these things, I value a degree of minimalism, and I’m a heavy user of virtual desktops.
I don’t need to cope with any of these potential downsides, as they’re not downsides to me in the first place. All of this said, the KDE community seems a lot more welcoming. I tend to suggest KDE Plasma for any people trying out Linux.
Hope this helps 👍
EDIT: I almost forgot to mention the most controversial one of them all. I love single click to open.