> loved Lisp, but none of the lisps have anything like Python's ecology. Julia, even less so.
None of the lisps have anything close to julia's ecology in numerical computing at least. Can't really speak to other niches though.
> People don't pick languages for language features, mostly. They pick them for their ecosystems -- the quality of libraries, compiler/runtime support, the network of humans you can ask questions of, etc.
Sure. And that's why Python is both popular and slow.