Is Perl worth learning?

Hi /prog/. I have Programming Perl and some spare time, should I learn Perl? I know the syntax is terrible, but is there anything good about it?

It's useful for quick hacks and better than PHP, but that's not saying much. It's also installed on most *nix'es.

I use proper languages for most of my programs, but I can see why other people would prefer Perl. It's probably not harmful to learn it as long as you don't start using it for large-scale/real programs.