I like Nim and many concepts of it with the big point of discussion being that function names get normalized (helloWorld === hello_world).

But I feel like that Nim is a language without purpose. It's all nice and cool on paper, but it has no use case where I think "I have to do it in Nim".

Go is known for making small, fast startup web apps, Python for making small one time tasks or Data work, Rust low level programming if you like functional programming, PHP if you want yo setup a website as fast as possible.

But Nim doesn't have this, it doesn't have a library that's better than in all other languages. It's nice but what for?

I have to disagree with your “when use what” list. Python has production ready web backend frameworks, Rust is perfectly fine for complex and high-level software, and PHP is mostly obsolete. That’s my humble opinion though. I looked into Nim and like many of the concepts. It’s quite complex and I prefer Rust most of the time when Nim would be an option. I’d argue it’s some kind of “jack of all trades”. A bit like python but compiled, ref-counted, and probably a lot faster. It’s lacking the huge community python has though.

It’s lacking the huge community python has though.

And where did Rust, Python etc get their huge community from in the first place? From being jack of all trades? No, because they were the best fit for their use case. After they established themselves there, they became widely good.