Perl is not as pretty as Python and Ruby, but at this moment in time IS the the most adequate language for web programming because of the sheer quantity (and maturity) of available web tools.

If you don't use Perl you will be depriving yourself of such wonders of the world as Template toolkit , Mason, mod_perl and a host of others.

Bottom line - use Perl because if you do you'll find most of the hard work has already been done for you.