There are many problems with your paragraph, including an overstatement of reality. People have to design and build those machines, monitor them, and repair them. It's a good thing that fewer jobs require tedious, repetitive work, and that mechanization has made many jobs easier. Your paragraph sounds like you're making a case against mechanization- is that what you really want to do?
As productivity goes up, it should free people up to have more leisure time. Before industrialization, people worked 12-15 hours a day on farms. Now the typical job is 8 hours. There's no reason why we shouldn't be able to have 6 hour a day, 4 days a week jobs, with more time for other activities.