We had been using Excel for org charts like most places. We wanted to add grouping, metadata, and neatly be able to extend/add information with or without constraints. This was much before I knew anything database related, and Access seemed to be more powerful than Excel. Having generated forms to fit the data model was much more user friendly and a lot less error prone than adding a new row to an Excel sheet.
People criticize Access for being a dumb database or a Excel with too much heavy lifting. It occupies a specific space as a DB on rails.