hot take i will absolutely not stand by in a few hours

xml is actually great, both to read and write, by humans and machines (at least as a subset of xml).

i kinda miss having xml everywhere

json awful to write and unreadable without indentation (counting the ]} )
yaml is far too complicated and intuitive for what it achieves
toml is nearly that but it's too flat, it's just not the same

@CobaltVelvet For JSON, the solution is to use jq, for pretty-printing.