Is filming the only jobs of cameraman when it comes to RTV ?

What makes reality TV show like Teen mom so popular and interesting to watch is the non stop drama between the two teen parents and the abusive relationship that they are dealing with daily. In almost all the episode they is always a fight or a fierce argument between the actors. This is sending a negative image to the fans of the show. The primary purpose of the show should be to reduce teen pregnancy by portraying the miserable, harsh life and many responsabilities of teens parents. I think after filming each episode , the creator/filmaker of those reality show should get together and delete scenes that are showing violence, abusive act, and everything that are sending a bad message to the public. But why do filmaker/cameraman allow those negativities to be aired on TV ? the answer is MONEY . Without those unexpected drama, the show would lose at least half of its audience. I mean seriously who would want to watch or buy the DVD of a show that constantly showing the boring and hard life of teen parents. Filmakers allow those violence to be seen in order to "spice up" and create tensions among the viewers of the show and make it more interesting to watch.