People are usually afraid of what they don't know, of the things they can't understand and control. I assume this is the case with monsters and ghosts. But, in an age without myths and fairytales, people needed to handle those concepts in some way, so they transformed them into something casual, friendly and fun. They also emptied these concepts of their original meaning and gave them an abstract understanding. Most of us live two types of lives in the same time... one in the real world and another one in the virtual space. Monsters and ghosts find a renewed life in the virtual space. Emptied of the content from the real life, they begin to live again in the world of gaming and internet.
