> Can't imagine having to live with anxiety of just staying alive.

Spoken like someone who easily affords both rent and food.

> Constant diseases, infestations, starvation, animal attacks.

Not really, no. Sometimes, sure. Not all the time. A lot of food was more abundant, and a lot of modern diseases weren't an issue. Animal attacks were probably a 'constant threat' - but not likely a daily, monthly, or even yearly occurrence.

> You would never feel like you have time to just, be.

Anthropologists are in pretty wide agreement that the nature of life back then was like 3–5 hours/day spent on food gathering, with the rest spent socializing, resting, storytelling. All with 100% organic food, all manner of delicious animals since hunted to extinction, cozy hides and grasses to sleep and lounge in and wear, water completely untainted by microplastics or agricultural pesticides etc.

We even have bone flutes that are 50-60k years old. Pentatonic tuning!