I really enjoy being a judge, the only drawback is the judges meeting which turns out to be more like the judges class all over again, however it is necessary because there are a lot of judges that haven't judged for a while so the refresher can be a good thing.
I am originally took the judging class so I would know what the judges were looking for, now I know how far I have to go as far as my BBQ goes. It has been very enlightening for me, as well as rewarding. I would say the class is very much worth it.
Good luck and welcome.