The purpose of context-free, or rather unambiguous grammars in general, isn't for the benefit of compilers, but for the benefit of humans. A computer can parse

The purpose of context-free, or rather unambiguous grammars in general, isn't for the benefit of compilers, but for the benefit of humans. A computer can parse almost everything, even regexes (with backtracking etc.), it's the humans that trip over fancy grammars.