I think in the case of horror, it's a chance to confront a lot of your worse fears and those fears usually have to do, ironically, with powerlessness and isolation.
You can't accomplish anything worthwhile if you inhibit yourself. If life teaches you nothing else, know this for sure: When you get the chance, go for it.
We are responsible to ourselves for our own existence; consequently we want to be the true helmsman of this existence and refuse to allow our existence to resemble a mindless act of chance.