I read often on HN how Excel is used a lot, but I don't really understand the use cases. If you're a software developer, what would you use Excel for? Maybe it's because I work for small companies, but I've almost never had Excel come up at work, and in the few cases where it did, LibreOffice was sufficient because those were very small and simple sheets.

95% of my work has always been in the source tree (so git), some kind of ticket or project software (Jira, redmine, etc), and a wiki-like documentation system (Confluence, mediawiki). And of the remaining 5% most would be some kind of stuff with a Web interface on the network. I'm pretty sure I haven't edited a Word doc for 5 years. Is this really the exception I get to encounter because of avoiding "corporate" companies?