1. Work and creativity give people meaning and joy. Ask anyone who is retired: after a few months of holiday many generally want to go back to work. Take away work and creativity, and many people will feel useless.

2. While what you say may perhaps be true on a larger timescale, at the scale of a human lifetime I don't think this is generally true. During the industrialization period in the 18th century, many people lost their jobs and were unhappy.