Unfortunately the business world seems to have settled on .doc/.docx and other MS Office formats as the de facto standard. Libre Office can read them but there are problems. For Libre Office to be a truly adequate solution they would have to resolve the remaining issues in writing/modifying MS Office formats. As a college student I am required to turn in my papers as MS Word documents and I can't afford to have formatting issues show up because I used a program which interprets formatting differently than MS Office.