Julia always seems to rank #1 or close to it when compared to other interpreted languages but I only ever see it used for research and math. Why doesn’t anyone use it for anything else?
Julia is incredibly slow to compile. Far worse than C++ last time I tried. For interactive notebooks, I found it’s common to have a single line take a couple minutes to compile - it’s simply not interactive in the way Python is, despite having good runtime performance once compiled.
The deal breaker for me is that its compiler is JIT based whether you want it or not. Code will hang at runtime for multiple minutes as it compiles all the library dependencies and specializes them to the given data types.
Also, there's a solution to precompile binaries with no JIT penalty...
https://github.com/JuliaLang/PackageCompiler.jl
Enjoy!