I agree that there's a lot of benefit to sticking with a thing. I've only seriously used Perl, PHP, Erlang, and Node, over 20+ years, deliberately. For productivity.
One reason for switching and trying is a fascination with finding the next amazing thing, always hunting for something new and better. Usually it's only slightly better, or not better. But sometimes you find Elixir, Laravel, or Deno. And it's more fun and productive, plus you're ahead on the resume.
One reason for switching and trying is a fascination with finding the next amazing thing, always hunting for something new and better. Usually it's only slightly better, or not better. But sometimes you find Elixir, Laravel, or Deno. And it's more fun and productive, plus you're ahead on the resume.