[zelphirkalt]

S-expressions is basically the much better version, that doesn't need a special interpreter/parser and doesn't reinvent the wheel.

[balamatom]

Natural language has parentheses. Math notation has those and different kinds of brackets, too. But tell me, what language has closing tags? A language for parrots?

Only half joking, it's same principle as how indentation-based Python ate world, while languages with `begin` and `end` keywords like Ruby and Pascal are hardly to be seen these days