It is my favourite language on the JVM, when not using Java.
Because of being a Lisp based language, bringing something else to the table besides "lets replace Java", and the community being welcoming of the host environments where Clojure is a guest.
Clojure is not only on JVM. I often use babashka for shell-scripting and nbb for tinkering on node.js. There's ClojureDart if you like Flutter. For Lua, there's Fennel which is not Clojure but has similar syntax and inspiration. There's Clojerl for Erlang, and glojure, joker and let-go for Golang. There's clj-python and clojure-rs. There's jank-lang (which is not production-ready yet, but already is very promising).
Because of being a Lisp based language, bringing something else to the table besides "lets replace Java", and the community being welcoming of the host environments where Clojure is a guest.