Everything is based on growth, real or imagined. Our institutions and culture are based on growth. We deliberately debase the value of labor through currency manipulation, for example, in order to encourage productivity and economic activity. The explosion of debt is so the welfare state can keep growing. Those massive credit markets everyone now fears is to keep the economy growing.
More workers needing to do less labor leads to an abundance that nobody can afford. Economic futurists should be looking at new models for a post-scarcity world.