I dislike the trend of becoming more dependent on the GUI when there was no need. I also dislike the trend where KDE and the like keep incorporating Windows features everyone hates the most just to make it "familiar" instead of extending on features we want. I'd rather have tab completion for filenames than autocomplete -- tab complete at least waits to be asked before filling in a garbage wrong guess.

Worse, they're becoming the only way some bits of hardware can be used. Like bluetooth. They had excellent commandline support for it then gutted it and left it to rot. How're you supposed to automate that? Why should you need a working X server to use a bluetooth keyboard?