Why do you prefer PDFs?

Wanting to submit a Word document, Powerpoint, Photoshop, InDesign file or something similar? Unfortunately, these files depend on the computer opening them to have all of the dependent fonts and (in some cases) images installed on the computer itself. PDF is one of the only “closed” file types that doesn’t depend on anything else being installed on the computer for it to open, view, and (most importantly) print correctly. This doesn’t mean PDFs never have printing issues, but 90% of any issues are cleared up by just saving your file as a PDF.