Eskild Hustvedt has written a nice blog entry on the joy of rediscovering Perl:

So, since I wanted to get away from the node-ecosystem, and my static site generator was written in JS, I thought I would try my hand at writing one in Perl. This is the most fun I've had writing code for years. It's just so nice to write.

I have to agree. While there can be utility in knowing other scripting languages, it is Perl which stands out as being a lot of fun. YMMV.