Irrespective of how you tend to enjoy it, I still believe that its quite the task and sometimes enjoying doing it makes it lesser of a task.
You're right, nevertheless things won't become more challenging. I think it'll become more comprehensive for the participants meaning you'll have even more tougher job to do as a judge.
You have good points. I feel I stop enjoying the work when I come across potential plagiarism or blatant acts of it. Then the true detective/enforcement work begins. I definitely don’t enjoy that part.