>>106328720
Tooling and developer experience: interaction with the compilers/interpreters, editor/IDE support, build systems, package management, debugging, docs, linters and formatters.
Ecosystem: libraries and frameworks and how open and well-maintained they are, openness of the tooling, alternative implementations, possible target platforms, learning materials.
>>106328802
Yes and no. The interop is good, but I consider Clojure's total reliance on the Java ecosystem and the level of influence that Java's dev culture had/has on Clojure to be negatives.