I\'ve found a few related questions, like Python vs. Perl (now deleted) and Is Perl Worth it? (now deleted), but I can\'t seem to find anything that directly a
There are few languages I would tie my career to. Perl will always be there and it will always be the best tool for certain kinds of jobs. But this is true for many languages. However, there are also languages which have more competition in some of the spaces where they are used. Perl is one language that has a lot more strong niches.
Still, you wouldn't restrict yourself to using just one language for your entire life - or even in one project if there are better options to solve a problem.
Career-wise, there are basic technologies which are fairly universally used, and of these I think a few of the most valuable are: relational database concepts and SQL, XML/HTML/HTTP/DOM, regular expressions. These are all basically independent of any particular vendor or language, and if you are strong in these areas, choice of language and platform are going to be informed by the problem being addressed.