FWIW I don’t think the Clojure or Scala communities have any kind of “hate” for Java. Clojure views Java as an ally for many of the reasons you discuss. I think

FWIW I don’t think the Clojure or Scala communities have any kind of “hate” for Java. Clojure views Java as an ally for many of the reasons you discuss. I think you’d be hard-pressed to find people in the Clojure or Scala camps that refuse to acknowledge there’s a right time to descend into Java. Likewise, I think any Ruby programmer worth his/her salt would tell you: if you’re trying to process 20,000 messages per second, don’t rely on Ruby. Moreover, JRuby, Clojure, and Scala are all quite fond of Java interop, so I’m not sure I agree with your opening statement that people who use said languages are “hipsters” who blatantly ignore the benefits of changing the level of abstraction when the situation warrants it.