I like the ribbon, but it takes up too much vertical space on a 16:9 display, especially in Word. LO Sidebar uses the space better, and I can see more of the document at once.
I've added my most used Word functions to the quick access bar, and some features are provided by the ghost menus that appear by the cursor, and I know a load of keyboard shortcuts. All of which means I very rarely open the ribbon. But when I do need it, it's orders of magnitude better than the rat's nest of menus and task panes we had before.