It's worth mentioning that SQLite is committed by its publishers to be backward-compatible out to 2050 and is the recommended by the Library of Congress as a safe long-term storage format (as are XML, JSON, and CSV). https://www.sqlite.org/locrsf.html
For single tables a database is probably overkill, but it's nice to have around when you need something reasonably powerful without being overly complex or hard to get started with.
I suppose if I was to recommend some "safe long-term storage formats" I, too, would choose things that are readable in plain ASCII and/or have open source roots.
Shoutout to the Library of Congress for doing the real heavy lifting here?
For single tables a database is probably overkill, but it's nice to have around when you need something reasonably powerful without being overly complex or hard to get started with.