In terms of your career, it's better to become an expert at one language than a jack of all trades. I can quickly move from language to language, but make the

In terms of your career, it's better to become an expert at one language than a jack of all trades. I can quickly move from language to language, but make the most money as a consultant for languages in which I'm an expert. I also think many developers use a single language for work and don't have much time after work to learn another one.