I found myself working on a CGI script just last week. Last year I was asked to patch a production CMS that was just a giant collection of CGI scripts.
This stuff is still out there and when it's done well, it "just works". I'm not saying CGI is the future, but I did find it refreshing to edit a script and then have the change immediately available without waiting for some daemon to restart/reload.
When I installed it with Macports recently it gave me a warning that CGI.pm is now in maintenance mode and should not be used for new projects. I get the nostalgia value but Dancer and Mojolicious are surely better alternatives?
It would be unusual to be doing new work in CGI, but I was looking at it recently because that was presented as an easy option for writing a cPanel plugin. At the very least, it's good to know that security fixes will still be applied to CGI.pm if they're needed.