The age of machines sneaked up on us. Steadily over the past century, the world has been increasingly shaped to the needs of machines. Farmland is designed for the tractor, millions of miles of road and acres of parking lots designed for cars, plus airports, shipping ports, distribution centers, factories, server farms... Everywhere we find spaces hostile to humans but welcoming to machines. Human beings relegate themselves mostly to apartment buildings, offices, and houses. We spend large amounts of time and energy powering and operating machinery. Meanwhile all over the planet the land, ocean, and sky is dominated by billions of metal and plastic amalgamations animated and set loose by human beings.
Our age of machines is not the classic Terminator apocalypse scenario, where an AI script gets out of control and destroys humanity. These machines are still physically operated by people, who are taking orders from other people. But it's pretty clear that the world is more welcoming to a person in a machine than one walking free on their own feet.