I think it's because of Cartoon Network. After that there was Toon Disney and then a few channels dedicated to old cartoons, so Nick had to have it's own. And it had to have one for teens, as well.
The only episode I really haven't liked was Nurse Stimpy. I hated when that episode came on. I just had to sit there and wait til the better one after it came on.
Ren is getting his daily spleen cleansing right now.
I just hope I haven't missed the Space Madness episode, that's my favorite.