This is silly. "PL is hard, let's go shopping." Except, here, it's "ziplining" instead of "shopping".<p>My ability to do my job depends on the programming languages used. Many things that I can do in Haskell or Clojure would take far too long to do in Java. And as I get older and leadership is expected of me, I need to know what's out there and what the most capable tools are (and what tools are exciting to the best programmers). I'm not so attached to any language that I believe in "one language to rule them all", because there obviously isn't such a thing, but PL is a choice of very high impact.<p>I would say, "don't get <i>so</i> attached to programming languages that you use the wrong tool or reject new ideas too early".<p>For example, Haskell is optimized for highly productive individuals who don't mind learning new concepts. It empowers the individual. Java (at least, with the modern enterprise culture) is optimized for teams of hundreds of mediocre programmers who are individually replaceable and insignificant. Career management requires picking work environments, and tool choices carry a lot of signal (if not perfect) about how a company views and manages technology.<p>The OP smells like that attitude of "I don't know it, so let's call it unimportant and talk about roller coasters in Spain."