Dog Fighting?

The only thing that comes to mind when I hear about the Michael Vick dog fighting situation is..Why?? Why would anyone partake in an act as gruesome as dog fighting? I just don't understand. The thought breeding and training dogs to essentially kill each other is unimaginable and to me incomprehensible. I understand Vick was only indicted and in America you're innocent until proven guilty, but I don't see any way Vick didn't at least know what was going on at a house that he owns. Numerous people have come forward and said that Vick has been heavily involved in dog fighting for several years. I think there will be enough witnesses and evidence to convict him. I don't care if it's Michael Vick or Joe Nobody, if you're involved in organized dog fighting you should rot in jail. Is Vick guilty in the court of public opinion? I say yes.