Here are few of the advantages of using Perl over other languages.
I am sure Perl lovers would agree and to those who do not know much about it would like to know
Perl was originally developed by Larry Wall as a scripting language for UNIX, aiming to blend the ease of use of the UNIX shell with the power and flexibility of a system programming language like C. Perl quickly became the language of choice for UNIX system administrators.
With the advent of the World Wide Web, Perl usage exploded. The Common Gateway Interface (CGI) provided a simple mechanism for passing data from a web server to another program, and returning the result of that program interaction as a web page. Perl quickly became the dominant language for CGI programming.

Perl runs on all platforms and is far more portable than other environments
Perl provides those features that are required for large projects:
-Modularization (i.e. packages),
-object-oriented techniques,
-arbitrary data structures, and
It provides the most advanced regular expressions that are no longer entirely regular
It has a very good memory management, efficiently implemented data structures for lists and hashes.