>> Will all people have access to all the comforts of human technology?

You worry too much. 500 years ago humans didn't have any advanced technology and they felt pretty comfortable. Now just look at all these homeless people. Do you think they have all the comforts of human technology?

People should have opportunities to advance within the society but not everyone wants that anyway. So as always there will be cool jobs and boring jobs.

Population growth will only accelerate technology. Would you prefer 1 developer working on 1 project or 1000 working on 1000 projects?

> 500 years ago humans felt pretty comfortable.

How do you know that

We have writings about how they lived and what they loved to do. We also know that humans adapt quite easily to the environment.

I don't doubt that people can be content with agrarianism, but worth remembering the inherent bias in recorded history towards the rich -- before the 19th century it seems very few people could read and write. Textual records are views of people who were relatively wealthy. I think that's true across cultures?

If you look at historical records of slavery, for example, you'll find "most people prospered", the people dying in cages weren't writing journals.

You have the writings of people 500 years ago who could write. That was not that common.

Humans can adapt to sleeping soundly next to a literal pile of garbage and feces (homeless drug addicts that I’ve seen in some third-world cities) but that doesn’t mean they “feel comfortable.”