I haven't written a single line of Perl for over a year now and can't remember much of the language - and I am sure I would not even be able to understand my own code anymore!
Perl is a very handy and powerful scripting language but it should not be considered as a durable solution. Whatever is quickly hacked using Perl should be probably rewritten in a much more structure language, especially if you plan on maintaining this code.
Of course one can also write perl with care and attention. Perl::Critic, the Moose family, and appropriate use of the CPAN really helps with that discipline.
Perl is a very handy and powerful scripting language but it should not be considered as a durable solution. Whatever is quickly hacked using Perl should be probably rewritten in a much more structure language, especially if you plan on maintaining this code.