Does Lisp still have any special feature which has NOT been adopted by other programming languages?
By Lisp, I mean all the Lisp programming languages as a whole. I've been told how amazing Lisp is and know that many languages have been inspired by Lisp. But does Lisp still have any exclusive design feature that just cannot be done in any other language?
The reason I asked the question is that recently, being an amateur programmer myself, I began to learn Clojure just for fun, and the result is that I found lots of Lisp-related posts and comments, saying but one thing: "Lisp is unique", but other modern programming languages have already adopted and stolen lots of ideas from Lisp, like conditionals, recursion, and the function as a first-class citizen. And even metaprogramming can be done by many languages.
Did I miss out something and is "Lisp still different"?
Or I'm lucky because other modern languages have stolen all the good parts from Lisp so that it's not necessary to dig into the parentheses Lisp world, and "Lisp was different".