[taeric]

Adoption of new languages stalled out with the proliferation of installed base attached to a language. Specifically, if you are deploying anything consumer facing, it makes little sense to consider anything other than javascript for web. If you have more of a budget, you will target whatever iOS supports nowadays. Even more budget, whatever the current Android stack is.

There is some nuance, of course. But, at large, those are your options.

Similarly, if you are writing a game, whatever dev kit your target of choice supports. With a heavy bias to the asset pipeline.

So called "backend" programming is, perhaps, different. That said, you are almost certainly best to pick whatever is close to "native" where you are deploying.