Why?

Fear Itself was particularly gruesome and disturbing on Thursday, but for some reason Shaun and I still watched it. It was terrible, think Voodoo Zombies Eating Humans Terrible. We think it was directed by the same people that did Saw 2 or something like that, as each episode is directed by a different person, and stars different people, which is good because every episode we have watched has ended with the important actors dying.
It was like a train wreck, we couldn't stop watching. We wanted to know how it ended. I spent lots of time with a blanket pulled up to my eyes. Maybe next week will be better....(see I'm hooked, scared, but still going back for more)

My question is ...
Why do we watch these things? Why not change the channel? Surely Seinfeld was on, it's always on. Or maybe something more cheerful, like Carebears? The people that make these shows know how freaky they are, they know that we can't change the channel because we want to see the good guys win, even if it means they die in the end. They have us hooked. They are soooo smart....We have fallen prey to this once or twice before, a certain Nicholas Cage movie was so very disturbing, I can't even tell you it's name, because it was THE worst movie ever not because of the acting, but because of the content and yet, we watched it to the end, which is how the money is made! Same with The Ring...don't go there.