Why do histornians consider the farming revolution the biggest event in history

Initially, mankind were hunters and gatherers, picking up whatever they could find to eat, and continually on the move looking for more food. Once mankind discovered it could raise its own food on farms, people began to settle down in permanent locations. They were no longer living from day to day, and could even store food for future needs. Small towns and eventually cities developed. This gave mankind the time to start more intellectual pursuits, such as writing.