LibreOffice is indeed awesome and I'm really productive with Writer & Calc. But Impress is a real pain. I write something and I always end up with somethink like "Oh dear no I don't want you to do this. Ok, I'll make this trick and hit enter, backspace to avoid magic ... ah no, this time this does not work. Let me just start over and try with pasting from elsewhere .. just the final edit and ... argh"