I've been in IT across three decades. Perl is just as useful to me today as it was whilst in college. Just because it isn't in use by all the sock-headed millennial hipsters doesn't mean a thing. I can do more with Perl in fewer lines and with less thought than with Python or Ruby. I like Perl's syntax and I like that it allows me to work with it in a way that works for me. Other languages are not so forgiving in this regard.

Look at the usefulness of CPAN. Perl 6 is analagous to Python 3. It's a different language more or less, but given a bit of time, Perl 6 will be used more and more. I already know people using it. I plan to use it more and more. There are huge swaths of the Internet still built on Perl.