This argument has been made in one form or another for decades. There are good reasons it hasn't prevailed. S-expressions are clumsier at expressing semistructu

This argument has been made in one form or another for decades. There are good reasons it hasn't prevailed. S-expressions are clumsier at expressing semistructured data that is primarily strings, which is what markup languages were designed for. Whether you think S-expressions are superior probably depends on the use case you have in mind. And there's a good chance it's not the use case you should be optimizing for.