Yep, thanks cognitive thought. They also started farming crops which eventually led to villages and towns and now cities. That's also when human beings began to be slaves to work. You know, waking up early to tend crops and unable to move around with the seasons due to their crops, houses and livestock etc.
I'd rather be a Neanderthal/hunter-gatherer.
Haha yeah you shoot a mammoth and then you can chill for weeks, you've got an abundance of food anyway! We totally fell for the farming/work trap and now we are stuck. Oh if only the mammoths were still here....
We (humanity) got sucked in by our own greed and hubris. And here we are, still doing it.