People are not always trustworthy. We could get hurt out there. So we do everything in our power to keep the chaos of the world at bay. But the world has a cruel and efficient way of dispensing with our illusions and bringing us face to face with reality. Jobs are lost.
Relationships fall apart.
People get sick and die. Just when we need them the most, our walls come tumbling down. Just when we are counting on them the most, our saviors are nowhere to be found. We'd rather have a new illusion than live with that reality, and so we try construct a new and better one. But God's approach is very different.