>>87849290Besides what
>>87849921 said, there's two other reasons
-It requires actual writing foresight. In other words, the people making the show have to actually be aware that the villain is a character that they are going to develop and that's hard when you are focusing on main characters especially in wacky shows
-It is a double-edged sword because if you develop the villain, you are completely cutting out previous episodes where the villain was a joke. You are essentially committed to having a story arc at that point. I mean, there's a good chance the show as already having a story arc and all, but developing the villain means you are going whole hog into having him be a growing threat. And that's scary to producers
