I love CSV for a number of reasons. Not the least of which it’s super easy to write a program (code) in C to directly output all kinds of things to CSV. You can also write simple middleware to go from just about any database or just general “thing” to CSV. Very easily. Then toss CSV into excel and do literally anything you want.
It’s sort of like, the computing dream when I was growing up.
+1 to ini files. I like you can mess around with them yourself in notepad. Wish there was a general outline / structure to those though.