It's a world in which we can hide right out in the open. It's a world in which we can lie with impunity. And be lied to. It's a neutral world whose soil will nourish good and bad equally. It can be an anonymous, isolated world.
Many people bury themselves in fantasies.
Or live only through books, or television, or their chemistry sets. There are astronomers, archeologists, computer programmers and old copy editors who haven't seen any part of the real world in years. But the more they interface in cyberspace, the more they lose touch with touch. So much of life is based on the senses. So much is based on physical experience.