The main issue I run into is that even when I use a standard format like ODF, sending a document to someone using a different office suite often leads to various formatting breaking. It’s to the point that if I know the person I’m sending the document to, isn’t going to be editing it, I send it as a PDF.

I felt deceived when Microsoft added ODF file support, only for formatting to still break when exporting/importing from another suite. What was the point if I’d get the same results as loading a DOCX in Libre Office?