I feel exactly the same way. Back when KDE was a bit messier and perhaps buggier, I tried to muddle along with GNOME for a number of years. Lots of little daily annoyances especially around the file management windows, multiple screens, audio configuration, etc. I prefer focus-follows-mouse, which required some kind of add-on plus changing a hidden setting somewhere and it still never worked properly. Switched to KDE two years ago and ALL of those things just worked out of the box. And everything else, is easy to customize without jumping through any hoops.