I fully agree. It takes a long time to get familiar enough with a language that you can really use it very well. It takes practical experience building real pro

I fully agree. It takes a long time to get familiar enough with a language that you can really use it very well. It takes practical experience building real products to get enough of a feel of what the strengths and weaknesses really are. This precludes learning a very large amount of languages, even for someone who's a full-time programmer with some liberty to goof off. Even if you know several of those languages, if you've coded in one for a while, the odds are good you won't remember the syntax intricacies, the gotchas, etc when moving to the next one, not to mention what the name and argument order of every function in the standard library is. Blaming programmers for being too lazy to learn new languages is silly. We use languages to solve problems. Working in an unfamiliar language makes the problem harder to solve, not easier. Unless the new language is a much better fit to the problem at hand. That's why its handy to know a few with widely different characteristics. If there's a language that can hit many positive characteristics at once, it's more useful to know well than one that doesn't. That isn't laziness. That's called being smart.