The thing, in my opinion, is to avoid spreading yourself too thin. I started using C/C++ more than 20 years ago and even if I feel really comfortable with the

The thing, in my opinion, is to avoid spreading yourself too thin. I started using C/C++ more than 20 years ago and even if I feel really comfortable with the language (except the latest revisions) I am still learning and improving. I don't think I could achieve the same level of mastery on half a dozen languages.