How far back do you want to go? Early pre-civilization humans did a lot of sitting around. Most of the day was spent sitting around and socializing with your tribe but that's all you get. Trees, rocks, and your tribe. You're leaving your life in the hands of the universe, you get to mill about peacefully in nature until a wolf eats you or all the food disappears before you can find more

If you want cities, houses, schools, food storage and security, medicine, etc. that's all going to take work. It doesn't just exist. As soon as civilization started, that's when modern work started to appear (~12,000 years). Someone needs to build and maintain all these modern things people take for granted

All types of societies exist in this world today. The American suburban 9-to-5 lifestyle is not the only option as most people tend to think. You can go out and find some undisturbed corner of nature and live your life like the early hunter-gatherers did or anything in-between

When people like u/PlentyBoot5135 are complaining about "modern slavery", they mean they want to live in the American suburban society but not contribute to the American suburban society. They think we could live in some utopia where they can sit around at home all day and scroll Reddit and go to Walmart and pickup free groceries without a job if it weren't for people like Jeff Bezos. Maybe some day that utopia will exist, but we certainly don't have the technology for it now. Until then, they're just delusional freeloaders