See the part what I don't get is, pick a language and stick to it, whatever happened to Ludwig Wittgenstein's quote : "The limits of my language determines the limits of my world"?
Despite having been forced to use a bunch of languages over the course of my career, you can only focus on so many. Truthfully, this is a great time to be a language dilettante, but one must pick and choose where to get serious. For instance, at the moment I'm focusing on Swift for a variety of reasons, but I wish I could spend more time with Scala and Julia. There are only so many hours in the day, and only so much mental bandwidth.