This isn't a critique of YAML itself (which , only of people using YAML for things, where they should have started with Lua/Python/Scheme. Someone already ment

This isn't a critique of YAML itself (which , only of people using YAML for things, where they should have started with Lua/Python/Scheme. Someone already mentioned Ansible. I find it particularly terrible. And bunch of other half-assed DSLs, terrible templating languages and such.