Is it worth the time? Depends on how much time it takes. If you feel like you are playing Phil Hartman's The Anal Retentive Coder ("I like to use a space, then a tab - space tab space tab - makes the characters happy and playful, don't you think?"), then no - it's not worth the time.

If you are going to re-invent the wheel, take a look at the source for the wheel (i.e. CGI.pm) - there's a lot of good stuff in there.