Not to speak about collaborating. Oh the fun of sharing a Word doc between 10 people, each one with a slight different version that messes the formats so badly (like that one guy who uses OpenOffice) and constantly making phone calls to ask others to close the document to not overwrite it.
Meanwhile with LaTeX you have plain text source files so you can have nice version control with git or oven github, each person working in their local repo or even branch, with the document having a nice history of commits, blames, merges, etc. Maybe not to the average office worker, but for anyone with experience in coding / version control is a godsend.