Enjoyment and fear
The Journal of Media Psychology found that people watch scary films for three main reasons: tension, relevance, and unrealism. Those who like horror due to its "unrealism" enjoy it because they know for a fact that it is all fake anyway. For them, it is just pure entertainment and fun. In reality enjoyment and fear do not go together. You cannot get "in the zone" and do your best work when you are operating through fear. Everything great that has ever been invented or developed was done so by someone who was really enjoying it. By someone who was fully immersed in a feeling of energised focus, full involvement, and enjoyment in the process of the activity. Someone who was in the zone and completely connected. That doesn't happen when you are fearful.