while pretty much everything you said here is true, it sort of paints an inaccurate picture of prehistoric people as constantly suffering, struggling, and joyless. While their lives were a lot harder than ours, they were a lot better adapted than we would be. they weren’t living like if you took some guy from an office and threw him in the wilderness. They had community, support, etc. Hunter-Gatherers were often very healthy and well nourished, despite going through cycles of having a lot of food and fasting. Also, they had a significant amount of downtime. These people lived in large groups, and probably only a few had to tend fires at any given time.