Perl5 is God. Perl6 is Jesus who will never ever return to Earth no matter how much we pray. Perl6, R.I.P.
I care so much more about the existing modules on CPAN, written for Perl5, than the [insert feature] of Perl6, or any other copy cat languages.
Presumably Perl 6 will be ready by that point. If you get "left behind," you can always while away the time writing Perl 6 programs, whilst waiting for the Seven Angels of the Bowl to pour out their plagues upon the Earth.
P.S. The name of the Perl language is a biblical reference to the "pearl of great price" from Matthew 13:46. Srsly.