[Jeff_Dickey]

Agreed, but I'll just point out that works both ways. Devs "identify" with their default tool of choice, and too many coulda-been-GREAT tools try to be the Swiss Army Nuclear Ginsu Chainsaw of Code rather than the sweet hammer they started out as. Sometimes this happens to dominant tools in a category (such as Rails within Ruby); other times, it's happened to entire languages (PHP, VB, and many others; I once had to maintain a terminal emulator written in COBOL.)

As Larry Wall and countless others have noted, great programmers are creatively lazy. Mediocre-to-average devs are lazy in less creative ways, like sticking to one language/toolchain for years and not diversifying. Anything that lives, including your career, either grows or it dies. Anything that grows within an impenetrable walled garden will eventually crush itself to death within those walls. It's sad when I see people do that to their careers, and over nearly 40 years in this craft, I've had ringside seats to multiple such bouts.