Funk...

Today I lapsed into a funk.
I knew something was wrong when I was on the phone with my Dad. I found myself getting irritated with him, which almost never happens. See my Dad, he is...a joker. I always have good conversations with him, so I knew something was up.
I putzed around my room organizing, I got on the internet, I tried watching the boob tube.....nothing seemed to help.
I have these episodes every once in awhile. I feel bored, restless, antsy and incapable of making a decision as to what to do.
Finally as I have learned to do from previous experiences I decided I had to get out of the house. So I went to see a movie. But not just any movie, because not just any movie would cheer me up....it needed to be something dark and scary....so I got online to see what was playing, and lo and behold there was Stephen King's The Mist. Anyone who knows me knows I am a Stephen King fanatic. (I bet you didn't know he has a daughter with my name.) So this was perfect.
The movie was great, I was surprised actually, usually they butcher King's work when turning it into a movie. It helped break me out of my funk as well.
Which brings me to this question:
Why is it that fucked up, dark, scary ass movies.............................cheer me up?