It may be an unpopular opinion on HN but I don't enjoy learning new syntaxes every year for relatively few benefits in new concepts or paradigms.
In my ideal world everyone would be using Lisp (my username checks out!) but so much power. It has a simple syntax (some say it has no syntax but I think that is a little hyperbole). In my ideal world new concepts and paradigms are implemented in Lisp using Lisp. I'd much rather spend time solving real problems that real human beings care about. I'd much rather learning new ways of solving problems with new paradigms. I don't want to waste hours learning new syntaxes and their gotchas and edge-cases!