Java is reliable, it's memory safe, it's mature, the tooling (IntelliJ and Eclipse) do not have competitors in other languages, the debugger is top notch, JFR is a lifeline, but most importantly the JVM is instrument-able. Something like jolokia agent+telegraf will get you a ton of vision into your production environment with zero changes to your codebase.

Java and the JVM are the best for so many reasons.