I agree that a language should be chosen primarily for the features that suit your needs. Expressiveness, stability, reliability, etc. But within a given doma

I agree that a language should be chosen primarily for the features that suit your needs. Expressiveness, stability, reliability, etc. But within a given domain, there is often no clear choice which has the best features. This is especially true for Ruby, Python, and Perl. Some people are happy in the fires of CPAN hell, for example.