Right, there's a big difference between an engineer with well-founded opinions, and a fanboy with strong emotions. If you can't explain the weaknesses of your f

Right, there's a big difference between an engineer with well-founded opinions, and a fanboy with strong emotions. If you can't explain the weaknesses of your favourite tools, that's not a good sign. If you can't explain your preference for one tool over another, that's a bad sign. It's disappointing to encounter developers who, for example, love C# but hate Java, and are entirely unable to articulate why. They're very similar languages! Somewhat related: Rich Hickey (of Clojure fame) makes the point that one of the disappointing aspects of the software development community is that there's so much talk about 'better', and so little about trade-offs.