I don't agree. That whole cities like munich use linux for their offices shows pretty clearly that this is not a real showstopper.

Not saying that Libre Office doesn't sometimes choke on complex documents - but that you are even using proprietary document formats makes the matter complex. It's probably something where one could compromise if you'd want to (or, depending on your job, could). Besides, givenall the online alternatives, their are really quite a lot of ways to not depend on Microsoft Office.