I know that .docx is a Microsoft Word document format and .dotx is a Microsoft Word template format. But what's the difference for the end user?
From my own experience I can say that opening a .dotx file in Microsoft Word has the same effect as copying .docx document and working on a copy in the application.
Am I missing the purpose of templates? What are the advantages of using them over copying and pasting pre-laid out .docx file?