It is inconceivable that anything should be existing. It is not inconceivable that a lot of people should also be existing who are not interested in the fact that they exist. But it is certainly very odd.
When we hide from the world in this way, we feel secure. We may think we have quieted our fear, but we are actually making ourselves numb with fear. We surround ourselves with our own familiar thoughts, so that nothing sharp or painful can touch us.