Man would be like the stone-age man living by depending on nature and its natural gifts. We would remain intelligent but ignorant about our intelligence. We could be content with the food we find in nature but would lack the desire to eat tasty food. In the modern age every man is busy running from one end to another in the process of doing his job, in the sense, to earn bread for his family. This he does because of the various opportunities and job options that he has due to his education.
But if there were no technological progress there would have been no education. We would only be looking up to the nature, experiencing the heat of the sun, rain, cold as and when given without any desire for beautiful roofs and shelters. Whenever we are hungry we would go in search of food and not behind the means to earn it. Parents would be free from trouble in the absence of demands for pizzas, burgers etc.
With no education there would be no competition and hence less violence probably. Demands for entertainment of the minds also would be absent. In the absence of technological progress means of communication and transport would not prevail. The atmosphere would be clean with no pollution anywhere. Priests would be busy trying to find solution to human problems by persuading the humble people to endure their hard lot as destined. There would be no need of yoga gurus or gyms as people would be exercising enough by walking long distances. There would be no need of counseling the minds about the art of living, since a person who has sufficed his hunger by whatever means is a happy person at the end of the day.