Through technology we have become way more productive though. Every increase in productivity can either be used to better the standard of living (assuming that requires more work) or be used to lower the amount of time people have to work. I think the people that want to work just because they like it are a big enough portion of the world population to feed and house every single person on the planet. But instead, the increase in productivity is being gobbled up by a few people at the top. (see productivity / pay gap)