FWIW Perl5 is extremely fast for a dynamic language. Perl6 is deeply interesting. It deserves investment on that basis, like choroba was saying. If you can find, say, even 3 job postings online today that say they are hiring for Perl6, there is a small possibility of it turning into a career path. Indeed.com today lists: Perl5, 14K; Java, 69K; iOS, 15.8K; JavaScript, 40K; C++, 40K; Perl6, 0.