MacFarlane isn't making enough profit from his two current abominations, so he has to make more shows.
It's all a conspiracy so that he and Groening can take over the reigns of "adult" animation on television in the United States.
South Park is no where near the crap level of Family Guy. At least South Park is still witty and can give you an intelligent laugh.
Don't really see wat funny about South Park. All they do to make that show funny is make rasicst comments over and over again in each episode