Java 8 + an IDE like NetBeans (which isn't even the best Java IDE) is actually a very pleasant development experience. I am a total convert from Python in vim to Java in NetBeans+jvi.

Refactoring in Python or Ruby or Javascript or whatever dynamic language is extremely painful compared to doing it in a static one. The "Software is never finished," argument can also work against dynamic languages.

Have you tried IntelliJ?

Yeah, I have. It seemed objectively better, but I started using NetBeans first, and it's what we all use at work. The workflows and keyboard shortcuts are ingrained enough at this point that switching doesn't really seem worth it right now.

Your point is that more efficient languages are slower to develop in? This hasn't been the case for a while, in my experience.