[throwaway92938]

> I suppose the argument would be that only developers with a modicum of interest in their craft will gravitate towards niche languages such as Clojure.

There is an opportunity cost and there are plenty of motivated developers that instead of learning yet another niche language decide to work on algorithms, applications and generally more difficult problems. Few languages offer enough advantages to overcome the fact that the latter is almost always a far better use of your time. As someone that knows Clojure relatively well, I'd argue that it's certainly not one of those few languages. Also, the trade off continuously gets worse as the popular languages adopt the good ideas from the niche languages and as problems continue to get more difficult and rely on teams of developers with library support in a wide variety of domains.

[mto]

Good point. I have been playing with lots of niche languages but in the end I also find that focusing my learning elsewhere is usually a better idea. Even more, I don't know many of the features of the languages I use although I have been working on rather tricky topics - from 3D viz to medical computer vision, low power device soft-realtime streaming deep learning inference ;) etc. and in decades of C++ I still only know the basics of metaprogramming (means standard template functions and classes). I am pretty dogmatic about RAII and similar but try to keep things simple. Even dropped most of the abstractions over time - sometimes 3 else ifs that then never change again are probably better than polymorphism, command pattern, lambda etc. stuff - at least you know what will be called there just by looking at the code.

Similarly I feel my Python code is getting simpler and simpler over time.

I'd probably even gravitate towards Go at some point nur there I do muss a few things.

I usually find the pay off is just better when I rather learn more about deep learning, statistics, domain knowledge, security, visualization or stuff like AWS, Kubernetes, Unity etc.

The language ends up to be a very small piece and usually more important to have the ecosystem and community available. Like Julia also does not solve the 2 language problem for me but leads to a 3 language problem.