[xakahnx]

The bulk of this article is more about creating your own programming language to solve a particular problem or set of problems. Less about choosing between general purpose programming languages. Does your code often require the same boilerplate to get going? Do you have common tasks which are error-prone? There are syntactic or programming design reasons to use a particular language, or maybe the reason could be performance. Think of tensorflow for example, maybe it's familiar for some R programmers. Code written in a language designed for a particular purpose can be very elegant. I like [1] as an example.

[1] https://docs.racket-lang.org/scribble-pp/html.html