Maybe its just that I don't have enough experience, but I've never met and can't think of any problem that may made think that I need to write a programming lan

Maybe its just that I don't have enough experience, but I've never met and can't think of any problem that may made think that I need to write a programming language. Most languages I know allows me to form some type of class/data structures for my need. What kind of problems are OP referring to? some kind of extensive math/scientific problem?