Then you may not be working in the same problem domain as the person who asked the question. I mean, my experience is pretty much the same as yours, to the poi

Then you may not be working in the same problem domain as the person who asked the question. I mean, my experience is pretty much the same as yours, to the point where if someone blames the language for poor performance I'm immediately skeptical of the claim. But other cases do exist, is especially for problems that are CPU intensive.