The JVM is still operationally a nightmare. Without knowledgeable tuning it requires a lot of memory even for the smallest of apps which is the most expensive r

The JVM is still operationally a nightmare. Without knowledgeable tuning it requires a lot of memory even for the smallest of apps which is the most expensive resource right now in computing and vastly constrains deployment. That's not even getting into the Java ecosystem which is vast, but it's full of nightmares like remote debugging ports that allow unauthenticated remote access to the JVM's memory space.